CN103595438A - Anti-jamming device and method and mobile terminal - Google Patents
Anti-jamming device and method and mobile terminal Download PDFInfo
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Abstract
The embodiment of the invention discloses an anti-jamming device and method and a mobile terminal. The anti-jamming device comprises a network judging module and an adjustable smoothing module, wherein the network judging module is used for sending a first switchover instruction to the adjustable smoothing module when the mobile terminal enters a specified network and sending a second switchover instruction to the adjustable smoothing module when the mobile terminal leaves the specified network and enters a next network; the adjustable smoothing module is used for being switched into a first smoothing mode after receiving the first switchover instruction and being switched into a second smoothing mode after receiving the second switchover instruction. When the mobile terminal moves between the networks, the anti-jamming device and method enable the mobile terminal to adopt different smoothing modes according to the same network type in different networks, all the smoothing modes are determined according to actual effective frequency bands of the network type in the corresponding networks, and therefore it can be ensured that the mobile terminal can reduce disturbance and operate normally when working under the network type in all the networks.
Description
Technical Field
The embodiment of the invention relates to the field of dual-mode and multi-mode communication, in particular to an anti-interference device, an anti-interference method and a mobile terminal.
Background
At present, many mobile terminals support more than one network system (or called communication mode, communication system, network mode), for example, some mobile phones have two network systems of GSM/TD-SCDMA, and some mobile phones also have 2.4GHz WLAN while the main network system adopts GSM, and so on. On these terminals, each network system generally has its own transmitting and receiving module, which is equivalent to a network system corresponding to a communication subsystem. Many of such terminals can work in two network systems simultaneously, so that the problem of mutual interference between two or more communication subsystems of the terminals is inevitable.
For example, the transmitting module of the network system 1 (hereinafter referred to as mode 1) operates at frequencies f 1-f 2, the receiving module of the network system 2 (hereinafter referred to as mode 2) operates at frequencies f 3-f 4, and although the two frequency bands are not overlapped, the frequency bands f1 and f4 may be very close to each other, so that when the mode 1 transmits a signal near f1 with high power, the transmitted signal thereof falls into the receiving channel of the mode 2, and for the mode 2, the transmitted signal of the mode 1 is an interference signal, which causes the receiving effect in the mode 2 to be poor, and even the communication is interrupted. Once the interference rejection modification is performed on the receiving channel of the mode 2, the normal operation of the mode 2 may be affected. Conversely, the transmission signal of mode 2 may interfere with the reception signal of mode 1, and once the transmission channel of mode 2 is modified similarly, the normal operation of mode 2 may be affected.
Disclosure of Invention
In view of this, embodiments of the present invention provide an anti-interference apparatus and method, and a mobile terminal, so that when the mobile terminal moves between networks, a certain network type supported by the mobile terminal can reduce interference and ensure normal operation.
In order to solve the technical problem, the embodiment of the invention discloses the following technical scheme:
in a first aspect, an anti-interference device is provided for a mobile terminal, and the device includes a network judgment module and an adjustable filtering module;
the network judgment module is used for sending a first switching instruction to the adjustable filtering module when the mobile terminal enters a specified network and sending a second switching instruction to the adjustable filtering module when the mobile terminal leaves the specified network and enters a next network;
the adjustable filtering module is used for switching to a first filtering mode after receiving the first switching instruction and switching to a second filtering mode after receiving the second switching instruction;
the first filtering mode is determined according to the actual effective frequency band of the specified network system in the specified network, and the second filtering mode is determined according to the actual effective frequency band of the specified network system in the next network.
With reference to the first aspect, in a first possible implementation manner, the adjustable filtering module includes a first filter and a second filter that are connected in parallel, and the adjustable filtering module is switched to the first filter after receiving the first switching instruction, and is switched to the second filter after receiving the second switching instruction.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner:
one end of the first filter and one end of the second filter are both connected with the same port of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are both connected with the same pin of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched by a selector switch; or,
one end of the first filter and one end of the second filter are both connected with the same port of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are respectively connected with different pins of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched by a selector switch; or,
one end of the first filter and one end of the second filter are respectively connected with different ports of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are both connected with the same pin of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched through a selector switch.
With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner, one end of the first filter and one end of the second filter are respectively connected to different ports of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are respectively connected to different pins of the mobile terminal radio frequency transceiver, and switching between the first filter and the second filter is controlled by software.
With reference to the first aspect, in a fourth possible implementation manner, the adjustable filtering module includes a third filter, where the third filter is an adjustable filter, and the third filter is switched to the first frequency range after receiving the first switching instruction, and the third filter is switched to the second frequency range after receiving the second switching instruction.
With reference to the first aspect or any possible implementation manner of the first aspect, the specified network type is GSM.
In a second aspect, a mobile terminal is provided, where the mobile terminal includes the foregoing interference rejection apparatus in the first aspect or any possible implementation manner of the first aspect.
In a third aspect, an anti-interference method is provided, which is used for a mobile terminal, and includes:
judging whether the network where the mobile terminal is located changes, wherein the changes are divided into entering a specified network and leaving the specified network to enter a next network, and specified network types exist in both the specified network and the next network;
if the mobile terminal enters the designated network, filtering the wireless signal received or transmitted by the mobile terminal under the designated network system by using a first filtering mode, and,
if the mobile terminal leaves the designated network and enters the next network, filtering the wireless signals received or transmitted by the mobile terminal under the designated network system by using a second filtering mode,
the first filtering mode is determined according to the actual effective frequency band of the specified network type in the specified network, and the second filtering mode is determined according to the actual effective frequency band of the specified network type in the next network.
With reference to the third aspect, in a first possible implementation manner:
the mobile terminal comprises a first filter and a second filter which are connected in parallel, wherein the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the first filtering mode comprises the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the first filter, and the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the second filtering mode comprises the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the second filter; or,
the mobile terminal comprises a third filter, the third filter is an adjustable filter, the filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using the first filtering mode comprises filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using a first frequency range of the third filter, and the filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using the second filtering mode comprises filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using a second frequency range of the third filter.
With reference to the third aspect or any possible implementation manner of the third aspect, the specified network type is GSM.
When the mobile terminal moves between networks, the embodiment of the invention can lead the mobile terminal to adopt different filtering modes aiming at the same network type under different networks by arranging the anti-interference device in the mobile terminal, and each filtering mode is determined according to the actual effective frequency band of the network type in the network, thereby ensuring that the mobile terminal can reduce interference and work normally when working under the network type in each network.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an exemplary configuration of an apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of frequency distribution in two modes;
FIG. 3 is a schematic diagram of frequency distribution in two modes;
FIG. 4 is a schematic diagram of a design of a tunable filter module;
FIG. 5 is a schematic diagram of a design of a tunable filter module;
FIG. 6 is a schematic diagram of a design of a tunable filter module;
FIG. 7 is a schematic diagram of a design of a tunable filter module;
FIG. 8 is a schematic diagram of a design of a tunable filter module;
fig. 9 is an exemplary flow diagram of a four-way method of an embodiment of the present invention.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention, but it will be appreciated by those skilled in the art that the invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the embodiments.
Example one
The present embodiment is not directed to general signal interference but to mobile terminals having dual mode or multimode functions. In a specific network, such mobile terminals can simultaneously operate in dual modes (commonly referred to as dual mode dual standby or dual mode dual pass) or multiple modes, and at this time, the problem of mutual interference of signals between the modes exists.
For example, in China mobile, a Band39 of GSM1800, TD-SCDMA and TD-LTE is deployed at present, and when a mobile terminal adopts dual-mode dual-pass (GSM 1800+ TD-SCDMA F frequency Band is used simultaneously, or GSM1800+ TDD-LTE Band 39), taking the GSM1800+ TD-SCDMA F frequency Band as an example, the frequency Band used for receiving GSM1800 is 1805-1880 MHz, and the frequency Band used for TD-SCDMA F frequency Band is 1880-1920 MHz. The interval between the two frequency bands is 0, when TD-SCDMA operates at the lower edge of the F frequency band, i.e. near to 1880MHz, for example, 1880-1881.6 MHz, due to the very close distance from 1805-1880 MHz of the GSM1800 receiving frequency band, the transmitted signal of TD-SCDMA interferes with the GSM1800 receiver, resulting in the degradation of the receiving performance of GSM 1800.
As shown in fig. 2, when the transmitting module in mode 1 operates at frequencies f 1-f 2, the receiving module in mode 2 operates at frequencies f 3-f 4, and the two frequency bands are very close to each other, especially when the receiving module in mode 2 operates near f4 and the transmitting module in mode 1 operates near f1, the high-power transmission in mode 1 interferes with the reception in mode 2, and the communication effect is poor or even interrupted.
Fig. 1 is a schematic diagram of an exemplary structure of an apparatus according to an embodiment of the present invention.
The embodiment discloses an anti-jamming device 100, for a mobile terminal,
the device 100 comprises a network judgment module 101 and an adjustable filtering module 102;
the network determining module 101 is configured to send a first switching instruction to the tunable filter module when the mobile terminal enters a designated network, and send a second switching instruction to the tunable filter module when the mobile terminal leaves the designated network and enters a next network;
the adjustable filtering module 102 is configured to switch to a first filtering mode after receiving the first switching instruction, and switch to a second filtering mode after receiving the second switching instruction;
the first filtering mode is determined according to the actual effective frequency band of the specified network system in the specified network, and the second filtering mode is determined according to the actual effective frequency band of the specified network system in the next network.
To remove interference, a bandpass filter may be used in the receive path to filter out interfering signals outside the operating band. For example, a SAW Filter (Surface Acoustic Wave Filter) is added to a receiving channel of a mode 2 on a mobile terminal, so that the Filter only allows signals in useful pass bands f 3-f 4 to pass through, and prevents interference signals (such as f 1-f 2) outside the pass bands from entering. However, in the process of implementing the present invention, the inventor finds that the suppression effect on interference is not good by using this scheme alone in this embodiment, and taking fig. 2 as an example, the useful signals f 3-f 4 and the interference signals f 1-f 2 are already very close to each other (f 1 is adjacent to f 4), so that the suppression effect on f1 by designing the filter with the passband range of f 3-f 4 is very small (for example, there may be only 2-3 dB attenuation), which is far insufficient for the interference signal near f1 with high power (for example, in order to reduce the influence of this interference signal, at least 30dB of suppression degree may be needed).
Further research has revealed that many times, in a certain country, region or operator, that is, in a certain specified network, a certain network system (for example, GSM) may not use all frequency bands in the relevant protocol specification, but only uses a part of the frequency bands. For example, in the mode 2 in fig. 2, all bands are f 3-f 4, but in a certain operator, the whole f 3-f 4 may not be used, but only a narrower sub-band of f 5-f 6 within the range of f 3-f 4 is used, that is, in the network of the operator, the actual effective band of the mode 2 is changed to f 5-f 6, as shown in fig. 3. Thus, in this embodiment, a first filtering method can be determined according to the actual effective frequency band of the network system in the network, for example, in the case shown in fig. 3, the filter from f3 to f4 is no longer used to filter the mode 2, but the filter from f5 to f6 is used to filter, at this time, the filter has better suppression on f1 (for example, a suppression degree of 40dB or more can be usually achieved), it can be ensured that the high-power signal in the mode 1 does not interfere with the receiver in the mode 2, and thus the interference problem is solved.
However, in the continuing research, it is found that, after the first filtering manner is introduced for filtering, when the mobile terminal leaves the specified network and enters the next network, the usage of the mobile terminal in the next network may be affected. As mentioned above, the receiving band of the mode 2 (e.g. GSM) is generally specified in the relevant protocol, and the terminal adopting the first filtering method cannot support the receiving band of the entire mode 2 specified by the protocol, so that when the mobile terminal operates in the mode 2 of another network (e.g. the actual effective band of the mode 2 in this network is f 3-f 5 in fig. 3), the mobile terminal may not normally operate in the mode 2 at this time.
In order to solve this problem, a second filtering manner is introduced in the present embodiment. And the second filtering mode is determined according to the actual effective frequency band of the specified network type in the next network. Also taking the above mode 2 as an example, the total frequency band of the mode 2 is f 3-f 4, because there is interference in the first network, and the actual effective frequency band of the mode 2 in the first network is f 5-f 6 (a sub-band of f 3-f 4), so the mobile terminal can use a special filtering method of f 5-f 6 in the first network; when the mobile terminal leaves the first network and enters the second network, the filtering method for the mode 2 on the mobile terminal is adjusted according to the actual effective frequency band of the mode 2 in the second network, for example, if the actual effective frequency band of the mode 2 in the second network is f 8-f 9 (another sub-band of f 3-f 4), the filtering method of f 8-f 9 is used, and if the actual effective frequency band of the mode 2 in the second network is directly the whole frequency band (f 3-f 4) specified by the protocol, the filtering method of f 3-f 4 is used.
The filtering when receiving signals in mode 2 has mainly been described above. Similarly, when the mode 2 sends a signal, the filtering mode may be set according to the actual effective frequency band of the same network system in different networks, and the best filtering effect is achieved by switching the filtering mode, so that the interference to other modes when the mode 2 sends a signal is reduced, and the normal operation of the mode 2 in each network is not affected. It is easy to understand that, since the filtering performed on the transmitted signal completely corresponds to the filtering performed on the received signal, the description of this embodiment is omitted.
When the mobile terminal moves between networks, the embodiment of the invention can lead the mobile terminal to adopt different filtering modes aiming at the same network type in different networks by arranging the anti-interference device in the mobile terminal, and each filtering mode is determined according to the actual effective frequency band of the network type in the network, thereby ensuring that the mobile terminal can reduce interference and work normally when working under the network type in each network.
Example two
The embodiment is based on the above embodiment and is further perfected and refined.
In this embodiment, the tunable filter module is implemented by a filter, and includes a first filter and a second filter connected in parallel, where the tunable filter module is switched to the first filter after receiving the first switching instruction, and the tunable filter module is switched to the second filter after receiving the second switching instruction.
The first filter may also be referred to as a custom filter, the second filter may also be referred to as a conventional filter, and the designated network may also be referred to as a target network. When the filter is used, the network signal is received by the conventional filter, and then the received signal is decoded by a network judgment module (such as a baseband processor) to judge whether the received signal is a target network, and specifically, whether the received signal is currently in a specified network can be judged according to network identifiers (such as an MCC (China center code) and an MNC (Mobile communications center) network code) of a country, a region or an operator network, so that whether the received signal is switched from the conventional filter to a customized filter is judged. If the interference between the two modes (or multiple modes) exists in the designated network, the baseband processor controls the adjustable filtering module to switch to the customized filter.
In particular, the tunable filter module including the first filter and the second filter connected in parallel may have various designs, which are exemplified below:
fig. 4 shows a design of a tunable filter module. One end of the first filter and one end of the second filter are both connected with the same port of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are connected with the same pin of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched through a selector switch.
Fig. 4 illustrates the filtering of the received signal. In fig. 4, mode 2 has a transmit channel and a receive channel, and the transmit channel is provided with a power amplifier. The first and second filters are disposed on the receiving channel to filter the signal received in mode 2. The specific form of the switch is not limited in this embodiment, for example, a form of a single-pole double-throw switch may be adopted, and the positions of the switch may also be various, for example, as shown in fig. 3, one switch may be respectively provided at the left end and the right end of the first filter and the second filter which are connected in parallel, two switches may be controlled in a linkage manner, or only one switch may be provided at the left end or the right end.
Fig. 5 shows a design of a tunable filter module. One end of the first filter and one end of the second filter are both connected with the same port of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are respectively connected with different pins of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched through a selector switch.
Fig. 6 shows a design of a tunable filter module. One end of the first filter and one end of the second filter are respectively connected with different ports of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are both connected with the same pin of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched through a selector switch.
Fig. 7 shows a design of a tunable filter module. One end of the first filter and one end of the second filter are respectively connected with different ports of the mobile terminal antenna master switch, the other end of the first filter and the other end of the second filter are respectively connected with different pins of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched under the control of software.
Some specific design forms of the tunable filter module are listed above by way of example. In this embodiment or some other embodiments of the present invention, the tunable filter module may have other different designs, and these specific designs may be used herein without departing from the spirit and scope of the present invention.
When the mobile terminal moves between networks, the embodiment of the invention can lead the mobile terminal to adopt different filtering modes aiming at the same network type in different networks by arranging the anti-interference device in the mobile terminal, and each filtering mode is determined according to the actual effective frequency band of the network type in the network, thereby ensuring that the mobile terminal can reduce interference and work normally when working under the network type in each network.
EXAMPLE III
The present embodiment is based on the first embodiment and corresponds to the previous embodiment.
In this embodiment, the tunable filter module includes a third filter, where the third filter is a tunable filter, and the third filter is switched to the first frequency range after receiving the first switching instruction, and is switched to the second frequency range after receiving the second switching instruction.
Fig. 8 is a design of a tunable filter module. Similar to the previous embodiment, in fig. 8, mode 2 has a transmit channel and a receive channel, and a third filter is disposed on the receive channel to filter the signal received in mode 2. The difference is that in this embodiment, two filters are not used for two filtering modes, but one tunable filter is used. The switching of the filtering of the two frequency bands is realized by adjusting and adjusting the center frequency and the passband bandwidth of the adjustable filter.
When the mobile terminal moves between networks, the embodiment of the invention can lead the mobile terminal to adopt different filtering modes aiming at the same network type in different networks by arranging the anti-interference device in the mobile terminal, and each filtering mode is determined according to the actual effective frequency band of the network type in the network, thereby ensuring that the mobile terminal can reduce interference and work normally when working under the network type in each network.
Example four
Fig. 9 is a schematic flow diagram of a four-way method of an embodiment of the invention. The embodiment discloses an anti-interference method for a mobile terminal, which comprises the following steps:
s901, judging whether a network where the mobile terminal is located changes, wherein the changes are divided into entering a specified network and leaving the specified network to enter a next network, and specified network types exist in both the specified network and the next network;
s902, if the mobile terminal enters the designated network, filtering the wireless signal received or transmitted by the mobile terminal in the designated network system by using a first filtering mode, and,
s903, if the mobile terminal leaves the appointed network and enters the next network, filtering the wireless signal received or transmitted by the mobile terminal under the appointed network system by using a second filtering mode,
the first filtering mode is determined according to the actual effective frequency band of the specified network type in the specified network, and the second filtering mode is determined according to the actual effective frequency band of the specified network type in the next network.
In particular implementation, it is preferred that:
the mobile terminal may include a first filter and a second filter connected in parallel, where filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using the first filtering manner includes filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using the first filter, and filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using the second filtering manner includes filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using the second filter; or,
the mobile terminal may include a third filter, where the third filter is an adjustable filter, the filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using the first filtering manner includes filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using a first frequency range of the third filter, and the filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using the second filtering manner includes filtering the wireless signal received or transmitted by the mobile terminal in the specified network system by using a second frequency range of the third filter.
In addition, preferably, the specified network standard is GSM.
For the method embodiments, since they substantially correspond to the apparatus embodiments, reference may be made to the apparatus embodiments for relevant portions of the description.
When the mobile terminal moves among networks, the embodiment of the invention can ensure that the mobile terminal adopts different filtering modes aiming at the same network type in different networks, and each filtering mode is determined according to the actual effective frequency band of the network type in the network, thereby ensuring that the mobile terminal can reduce interference and normally work when working under the network type in each network.
It should be noted that the mobile terminal disclosed in the present disclosure may be various handheld terminal devices, such as a mobile phone, a Personal Digital Assistant (PDA), etc., and therefore the scope of protection of the present disclosure should not be limited to a specific type of mobile terminal. Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
Moreover, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The principles and embodiments of the present invention have been described herein using specific examples, which are presented solely to aid in the understanding of the methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. An anti-interference device is characterized by being used for a mobile terminal and comprising a network judgment module and an adjustable filtering module;
the network judgment module is used for sending a first switching instruction to the adjustable filtering module when the mobile terminal enters a specified network and sending a second switching instruction to the adjustable filtering module when the mobile terminal leaves the specified network and enters a next network;
the adjustable filtering module is used for switching to a first filtering mode after receiving the first switching instruction and switching to a second filtering mode after receiving the second switching instruction;
the first filtering mode is determined according to the actual effective frequency band of the specified network system in the specified network, and the second filtering mode is determined according to the actual effective frequency band of the specified network system in the next network.
2. The apparatus of claim 1, wherein the tunable filter module comprises a first filter and a second filter connected in parallel, and wherein the tunable filter module switches to the first filter when receiving the first switch command and switches to the second filter when receiving the second switch command.
3. The apparatus of claim 2, wherein:
one end of the first filter and one end of the second filter are both connected with the same port of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are both connected with the same pin of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched by a selector switch; or,
one end of the first filter and one end of the second filter are both connected with the same port of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are respectively connected with different pins of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched by a selector switch; or,
one end of the first filter and one end of the second filter are respectively connected with different ports of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are both connected with the same pin of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched through a selector switch.
4. The device according to claim 2, wherein one end of the first filter and one end of the second filter are respectively connected with different ports of the mobile terminal antenna main switch, the other end of the first filter and the other end of the second filter are respectively connected with different pins of the mobile terminal radio frequency transceiver, and the first filter and the second filter are switched under software control.
5. The apparatus of claim 1, wherein the tunable filter module comprises a third filter, the third filter is a tunable filter, and the third filter is switched to the first frequency band range after receiving the first switching command and is switched to the second frequency band range after receiving the second switching command.
6. The apparatus according to any one of claims 1 to 5, wherein the specified network standard is GSM.
7. A mobile terminal, characterized in that the mobile terminal comprises the anti-interference device according to any one of claims 1 to 6.
8. An anti-interference method, for a mobile terminal, the method comprising:
judging whether the network where the mobile terminal is located changes, wherein the changes are divided into entering a specified network and leaving the specified network to enter a next network, and specified network types exist in both the specified network and the next network;
if the mobile terminal enters the designated network, filtering the wireless signal received or transmitted by the mobile terminal under the designated network system by using a first filtering mode, and,
if the mobile terminal leaves the designated network and enters the next network, filtering the wireless signals received or transmitted by the mobile terminal under the designated network system by using a second filtering mode,
the first filtering mode is determined according to the actual effective frequency band of the specified network type in the specified network, and the second filtering mode is determined according to the actual effective frequency band of the specified network type in the next network.
9. The method of claim 8, wherein:
the mobile terminal comprises a first filter and a second filter which are connected in parallel, wherein the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the first filtering mode comprises the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the first filter, and the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the second filtering mode comprises the filtering of the wireless signals received or transmitted by the mobile terminal in the specified network system by using the second filter; or,
the mobile terminal comprises a third filter, the third filter is an adjustable filter, the filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using the first filtering mode comprises filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using a first frequency range of the third filter, and the filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using the second filtering mode comprises filtering of the wireless signal received or transmitted by the mobile terminal in the specified network system by using a second frequency range of the third filter.
10. The method according to claim 8 or 9, wherein the specified network standard is GSM.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868250A (en) * | 2014-02-20 | 2015-08-26 | 联想(北京)有限公司 | Control method, control device and electronic device |
| CN105307178A (en) * | 2014-07-31 | 2016-02-03 | 展讯通信（上海）有限公司 | Dual-mode dual-connection terminal and communication method thereof |
| WO2016141701A1 (en) * | 2015-03-06 | 2016-09-15 | 中兴通讯股份有限公司 | Method and apparatus for acquiring network service via frequency band information |
| CN106788311A (en) * | 2016-11-30 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of terminal capabilities improves circuit and mobile terminal |
| WO2020103652A1 (en) * | 2018-11-21 | 2020-05-28 | 惠州Tcl移动通信有限公司 | Method for reducing sglte coupling de-sense and mobile terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0812069A2 (en) * | 1996-06-05 | 1997-12-10 | Sharp Kabushiki Kaisha | Dual-mode cellular telephone system |
| CN1283372A (en) * | 1997-12-29 | 2001-02-07 | 艾利森电话股份有限公司 | Method and arrangement in radio communication metworks |
| CN102780994A (en) * | 2011-05-10 | 2012-11-14 | 中国移动通信集团公司 | Mobile communication terminal and method for realizing coexistence of different communication systems |
-
2013
- 2013-11-14 CN CN201310567594.XA patent/CN103595438A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0812069A2 (en) * | 1996-06-05 | 1997-12-10 | Sharp Kabushiki Kaisha | Dual-mode cellular telephone system |
| CN1283372A (en) * | 1997-12-29 | 2001-02-07 | 艾利森电话股份有限公司 | Method and arrangement in radio communication metworks |
| CN102780994A (en) * | 2011-05-10 | 2012-11-14 | 中国移动通信集团公司 | Mobile communication terminal and method for realizing coexistence of different communication systems |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868250A (en) * | 2014-02-20 | 2015-08-26 | 联想(北京)有限公司 | Control method, control device and electronic device |
| CN104868250B (en) * | 2014-02-20 | 2019-03-29 | 联想(北京)有限公司 | A kind of control method, equipment and electronic equipment |
| CN105307178A (en) * | 2014-07-31 | 2016-02-03 | 展讯通信（上海）有限公司 | Dual-mode dual-connection terminal and communication method thereof |
| WO2016141701A1 (en) * | 2015-03-06 | 2016-09-15 | 中兴通讯股份有限公司 | Method and apparatus for acquiring network service via frequency band information |
| JP2018511239A (en) * | 2015-03-06 | 2018-04-19 | ゼットティーイー コーポレーションＺｔｅ Ｃｏｒｐｏｒａｔｉｏｎ | Method and apparatus for acquiring network service from frequency band information |
| CN106788311A (en) * | 2016-11-30 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | A kind of terminal capabilities improves circuit and mobile terminal |
| WO2020103652A1 (en) * | 2018-11-21 | 2020-05-28 | 惠州Tcl移动通信有限公司 | Method for reducing sglte coupling de-sense and mobile terminal |
| US11522569B2 (en) | 2018-11-21 | 2022-12-06 | Huizhou Tcl Mobile Communication Co., Ltd. | Method for reducing SGLTE coupling de-sense and mobile terminal |
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