CN110740463A - method and device for reducing signal interference - Google Patents
method and device for reducing signal interference Download PDFInfo
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Abstract
The invention discloses a method for reducing signal interference, which comprises the steps of obtaining th signal parameter information of a th wireless communication network and second signal parameter information of a second wireless communication network, obtaining network connection information of the second wireless communication network when the th signal parameter information and the second signal parameter information accord with a preset signal interference condition, and adjusting the working mode of a Low Noise Amplifier (LNA) of the second wireless communication network by adopting a preset adjusting rule according to the network connection information.
Description
Technical Field
The invention relates to a terminal technology in the field of mobile communication, in particular to methods and devices for reducing signal interference.
Background
In order to meet different market demands, terminal products such as mobile phones and the like usually include a plurality of Long Term Evolution (LTE) frequency bands, and meanwhile, in order to improve the communication performance of the mobile terminal, the mobile terminal also has a carrier aggregation function; thus, when LTE is in operation, as shown in fig. 1, some inter-modulation products and harmonic components of LTE bands may interfere with a Wireless Local Area Network (WLAN) band;
as shown in fig. 2, when the terminal product operates in the LTE B5 frequency band, the frequency range of B5Tx is 824MHz-849MHz, and its third harmonic component 2472 + 2547MHz falls within the frequency range of WLAN (channel) channel 13, which affects the normal operation of the WLAN, so that the WLAN performance is degraded in degree;
as shown in fig. 3, when the terminal product operates in the B12+ B4 frequency band of the Carrier Aggregation (CA) mode, the frequency range of B12Tx is 699-24716 MHz, the frequency range of B4Tx is 1710-1755MHz, and the frequency range of the second-order intermodulation product of B12 and B4 is 2409-2471MHz, which may affect the WLAN channels 1-13, and also may cause the WLAN performance to get reduction in degree;
as shown in fig. 4, in the design of an end product, Low Noise Amplifiers (LNAs) are usually disposed in the WLAN rf path to improve the WLAN signal receiving sensitivity, the LNAs cause problems, and harmonic components of the interference between the LTE signal and the WLAN signal are amplified by the LNAs in the WLAN path, which further affects the performance of the WLAN.
Therefore, how to reduce the interference of the LTE signal to the WLAN signal and improve the WLAN communication quality is an urgent problem to be solved.
Disclosure of Invention
In view of this, it is desirable to provide methods and apparatuses for reducing signal interference, which can reduce interference of LTE signals to WLAN signals and improve WLAN communication quality.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides methods for reducing signal interference, which comprise the following steps:
acquiring the th signal parameter information of the th wireless communication network and the second signal parameter information of the second wireless communication network;
when the th signal parameter information and the second signal parameter information meet a preset signal interference condition, network connection information of the second wireless communication network is acquired;
and adjusting the working mode of a Low Noise Amplifier (LNA) of the second wireless communication network by adopting a preset adjusting rule according to the network connection information.
In the above solution, the acquiring th signal parameter information of the th wireless communication network and second signal parameter information of the second wireless communication network includes:
obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network.
In the foregoing solution, the th signal parameter information and the second signal parameter information meet a preset signal interference condition, including:
the th signal operating frequency is within a preset th frequency range, and the second signal operating frequency is within a preset second frequency range;
the acquiring network connection information of the second wireless communication network includes:
and acquiring the network connection state information of the second wireless communication network and/or the Received Signal Strength Indication (RSSI) of the second wireless communication network.
In the foregoing solution, the adjusting the operating mode of the low noise amplifier LNA of the second wireless communication network according to the network connection information by using a preset adjustment rule includes:
when the second wireless communication network is disconnected and/or the RSSI is lower than a preset adjustment threshold value, adjusting the working mode of the LNA to be a channel mode; otherwise, the working mode of the LNA is adjusted to an amplification mode.
The embodiment of the invention also provides devices for reducing signal interference, which comprise an acquisition module, a detection module and an adjustment module, wherein,
the acquiring module is used for acquiring the th signal parameter information of the th wireless communication network and the second signal parameter information of the second wireless communication network;
the detection module is configured to acquire network connection information of the second wireless communication network when the th signal parameter information and the second signal parameter information meet a preset signal interference condition;
and the adjusting module is used for adjusting the working mode of the LNA of the second wireless communication network by adopting a preset adjusting rule according to the network connection information.
In the foregoing scheme, the obtaining module is specifically configured to:
obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network.
In the foregoing solution, the detection module is specifically configured to:
and when the th signal working frequency is within a preset frequency range and the second signal working frequency is within a preset second frequency range, acquiring the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network.
In the foregoing solution, the adjusting module is specifically configured to:
when the second wireless communication network is disconnected and/or the RSSI is lower than a preset adjustment threshold value, adjusting the working mode of the LNA to be a channel mode; otherwise, the working mode of the LNA is adjusted to an amplification mode.
Embodiments of the present invention also provide storage media having stored thereon an executable program that, when executed by a processor, performs the steps of any of the methods of reducing signal interference as described above.
The embodiment of the present invention further provides apparatuses for reducing signal interference, which include a processor, a memory, and an executable program stored in the memory and capable of being executed by the processor, and when the processor executes the executable program, the processor executes any of the steps of the method for reducing signal interference described above .
The method and the device for reducing the signal interference, provided by the embodiment of the invention, can be used for obtaining the signal parameter information of the th wireless communication network and the second signal parameter information of the second wireless communication network, obtaining the network connection information of the second wireless communication network when the th signal parameter information and the second signal parameter information meet the preset signal interference condition, and adjusting the working mode of the LNA of the second wireless communication network according to the network connection information and the preset adjustment rule, so that the working mode of the LNA is adjusted according to the interference condition of the th wireless communication network, namely the LTE network, on the second wireless communication network, namely the WLAN, and the network connection information of the second wireless communication network, and the interference signal of the th wireless communication network is prevented from influencing the signal transmission of the second wireless communication network after being amplified by the LNA, thereby reducing the interference of the LTE signal on the WLAN signal and improving the WLAN communication quality.
Drawings
Fig. 1 is a diagram illustrating interference generation in a conventional terminal;
FIG. 2 is a diagram illustrating harmonic interference of a conventional terminal;
fig. 3 is a diagram illustrating interference caused by intermodulation products of a conventional terminal;
FIG. 4 is a schematic diagram of a conventional RF path structure of a terminal;
FIG. 5 is a flowchart illustrating a method for reducing signal interference according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an LNA according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a method for reducing signal interference by a terminal according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a terminal WLAN network hierarchy according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a structure of a device for reducing signal interference according to an embodiment of the present invention.
Detailed Description
In the embodiment of the invention, signal parameter information of a wireless communication network and second signal parameter information of a second wireless communication network are acquired, network connection information of the second wireless communication network is acquired when the signal parameter information and the second signal parameter information accord with a preset signal interference condition, and the working mode of an LNA of the second wireless communication network is adjusted by adopting a preset adjusting rule according to the network connection information.
The present invention is further illustrated in detail in connection with the following examples.
As shown in fig. 5, the method for reducing signal interference according to the embodiment of the present invention includes:
acquiring th signal parameter information of a th wireless communication network and second signal parameter information of a second wireless communication network at step 501;
the wireless communication network may be an LTE network, the second wireless communication network may be a WLAN, the wireless communication network and the second wireless communication network may be networks which can simultaneously communicate with terminals;
the th signal parameter information and the second signal parameter information can be obtained by a terminal baseband processor, etc., the th signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the th wireless communication network, the second signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the second wireless communication network, and the th wireless communication network and the second wireless communication network can be obtained by reading a wireless communication network register.
, obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network;
since co-frequency signal interference is most significant, it may be preferable to acquire the th signal operating frequency of the th wireless communication network and the second signal operating frequency of the second wireless communication network;
specifically, the operating frequency of LTE can be obtained by reading LTE registers, for example: b1, B2, B3, etc.; the operating frequency of the WLAN can be obtained by reading a WLAN register, for example: 2.5G, 5G, etc.
Step 502, when the th signal parameter information and the second signal parameter information accord with a preset signal interference condition, acquiring network connection information of the second wireless communication network;
here, the preset signal interference condition may be set according to a situation that interference actually occurs in actual working of LTE and WLAN; such as the case where harmonics of LTE interfere with WLAN signals; the network connection information of the second wireless communication network may be a current network connection status, a signal strength, and the like of the second wireless communication network.
, when the Signal operating frequency is within a preset frequency range and the second Signal operating frequency is within a preset second frequency range, acquiring network connection status information of the second wireless communication network and/or a Received Signal Strength Indicator (RSSI) of the second wireless communication network;
specifically, the preset th frequency range may be a frequency at which the LTE network interferes with the WLAN, for example, when the LTE is in the preset th frequency range, the LTE harmonic or intermodulation product frequency interferes with the WLAN signal, the preset th frequency range may be a B5 frequency range or a B12+ B4 frequency range of a CA mode, the preset second frequency range may be a frequency range at which the LTE network interferes with the WLAN, the preset second frequency range may be a 2.4G frequency range of the WLAN, when the LTE is in the B12+ B4 frequency range of the B5 or CA mode and the WLAN is in the 2.4G frequency range, the WLAN signal is more easily interfered by the LTE, then, the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be obtained, and the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be extracted from the received signal.
Step 503: adjusting the working mode of an LNA of the second wireless communication network by adopting a preset adjusting rule according to the network connection information;
here, the operation mode of the LNA may be adjusted by a wireless driver (WiFi driver) or the like through a baseband processor or the like;
the LNA can not only improve the sensitivity of the WLAN radio frequency channel, but also reduce the Input Third-order Intercept Point (IIP 3) of the whole receiving path, so that once an external interference signal leaks, the InterModulation Distortion (IMD) generated by the LNA is very large, and the generated IMD signal is close to the receiving signal of the WLAN and directly interferes with the main frequency;
the LNA generally has two working modes, namely a Bypass mode and an amplification mode, wherein the amplification mode is generally called a Non-Bypass mode, in the Bypass mode, the LNA does not amplify received signals any more, at the moment, the LNA has passages for the passed signals, at the moment, IMD generation can be avoided, and therefore, the interference of LTE signals to WLAN signals can be weakened;
the preset regulation rule can be set according to the influence degree of the interference degree on the second wireless communication network and can be set according to the result of the interference test; if the interference signal seriously affects the WLAN transmission after being amplified by the LNA, the amplification mode of the LNA can be turned off; if the effect of the interfering signal on the WLAN transmission after amplification by the LNA is within an acceptable range while the WLAN signal reception is more sensitive due to the LNA amplification, the LNA amplification mode may be turned on.
, when the second wireless communication network connection state is disconnection and/or RSSI is lower than the preset adjusting threshold, adjusting the working mode of the LNA to be a pass-through mode, otherwise, adjusting the working mode of the LNA to be an amplification mode;
specifically, when the WLAN connection is in the disconnected state or the RSSI is lower than any of the preset adjustment threshold, which indicates that the WLAN may have a bad condition due to the interference of the LTE, the operation mode of the LNA may be adjusted to the access mode, so as to stop amplifying the possible LTE interference signal, thereby reducing the interference of the LTE signal.
Thus, by adjusting the operating mode of the LNA, a balance is struck between increased WLAN sensitivity and reduced interference from LTE signals.
The positive effects of the present invention will be described in further detail in with reference to specific examples;
in this example, a mobile phone terminal is taken as an example, and step illustrates a method for reducing signal interference, as shown in fig. 7, the specific steps include:
step 701: in an initial state, an external LNA on a WLAN access of a terminal product works in a non-bypass state;
step 702: detecting whether the terminal product works and the WLAN have a mutual interference phenomenon, wherein the detection can be used for detecting whether harmonic waves or intermodulation components of LTE working frequency points are overlapped with a WLAN frequency band; if no interference exists, executing step 704, otherwise, executing step 703;
step 703, judging whether the interference (interference) result caused to the WLAN exceeds threshold, if so, executing step 705, otherwise, executing step 704;
step 704: controlling an LNA on a WLAN radio frequency path to work in a non-bypass mode;
step 705: and controlling the LNA on the WLAN radio frequency path to work in bypass mode.
Fig. 8 is a schematic view of a network hierarchy of a WLAN of a terminal, where the WLAN performs signal processing on a received wireless signal, and the method specifically includes the steps of:
step 801: a hardware circuit physical receiving (PHY Rx) module sends a received signal to a Double Data Rate (DDR) buffer;
step 802: a media access reception (MAC Rx) module extracts network connection information in a received signal, and provides a judgment result of whether the current connection state and the RSSI value exceed a threshold value to a Wireless connection subsystem Firmware (WCNSSFirmware) module;
step 803: the WCNSS Firmware module reprocesses the received network connection information and hands the network connection information to the WiFiDriver;
step 804: the DDR sends the received signal to a WiFi Driver for processing;
step 805: the WiFi Driver judges whether the LNA (path) Bypass processing is needed according to the received network connection information, and then transmits the processing information to a WLAN Baseband (Baseband) circuit to control the LNA.
As shown in fig. 9, the apparatus for reducing signal interference according to an embodiment of the present invention includes: an acquisition module 91, a detection module 92 and an adjustment module 93; wherein the content of the first and second substances,
the obtaining module 91 is configured to obtain st signal parameter information of a wireless communication network and second signal parameter information of a second wireless communication network;
the wireless communication network may be an LTE network, the second wireless communication network may be a WLAN, the wireless communication network and the second wireless communication network may be networks which can simultaneously communicate with terminals;
the th signal parameter information and the second signal parameter information can be obtained by a terminal baseband processor, etc., the th signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the th wireless communication network, the second signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the second wireless communication network, and the th wireless communication network and the second wireless communication network can be obtained by reading a wireless communication network register.
, obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network;
since co-frequency signal interference is most significant, it may be preferable to acquire the th signal operating frequency of the th wireless communication network and the second signal operating frequency of the second wireless communication network;
specifically, the operating frequency of LTE can be obtained by reading LTE registers, for example: b1, B2, B3, etc.; the operating frequency of the WLAN can be obtained by reading a WLAN register, for example: 2.5G, 5G, etc.
The detection module 92 is configured to acquire network connection information of the second wireless communication network when the th signal parameter information and the second signal parameter information meet a preset signal interference condition;
here, the preset signal interference condition may be set according to a situation that interference actually occurs in actual working of LTE and WLAN; such as the case where harmonics of LTE interfere with WLAN signals; the network connection information of the second wireless communication network may be a current network connection status, a signal strength, and the like of the second wireless communication network.
, when the signal operating frequency is within a preset frequency range and the second signal operating frequency is within a preset second frequency range, acquiring network connection status information of the second wireless communication network and/or RSSI of the second wireless communication network;
specifically, the preset th frequency range may be a frequency at which the LTE network interferes with the WLAN, for example, when the LTE is in the preset th frequency range, the LTE harmonic or intermodulation product frequency interferes with the WLAN signal, the preset th frequency range may be a B5 frequency range or a B12+ B4 frequency range of a CA mode, the preset second frequency range may be a frequency range at which the LTE network interferes with the WLAN, the preset second frequency range may be a 2.4G frequency range of the WLAN, when the LTE is in the B12+ B4 frequency range of the B5 or CA mode and the WLAN is in the 2.4G frequency range, the WLAN signal is more easily interfered by the LTE, then, the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be obtained, and the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be extracted from the received signal.
The adjusting module 93 is configured to adjust a working mode of an LNA of the second wireless communication network according to the network connection information by using a preset adjustment rule;
here, the operating mode of the LNA may be adjusted by a WiFi driver or the like through a baseband processor or the like;
the LNA not only can improve the sensitivity of a WLAN radio frequency channel, but also can reduce the IIP3 of the whole receiving path, so that after external interference signals leak, the IMD generated by the LNA can be very large, and the generated IMD signals are close to the receiving signals of the WLAN and can directly interfere with the main frequency;
the LNA has two working modes, namely a Bypass mode and an amplification mode, wherein the amplification mode is generally called a Non-Bypass mode, in the Bypass mode, the LNA does not amplify received signals any more, at the moment, the LNA has only paths for the passed signals, and at the moment, IMD (in-mold decoration) can be avoided, so that the interference of LTE (long term evolution) signals on WLAN (wireless local area network) signals is weakened;
the preset regulation rule can be set according to the influence degree of the interference degree on the second wireless communication network and can be set according to the result of the interference test; if the interference signal seriously affects the WLAN transmission after being amplified by the LNA, the amplification mode of the LNA can be turned off; if the effect of the interfering signal on the WLAN transmission after amplification by the LNA is within an acceptable range while the WLAN signal reception is more sensitive due to the LNA amplification, the LNA amplification mode may be turned on.
, when the second wireless communication network connection state is disconnection and/or RSSI is lower than the preset adjusting threshold, adjusting the working mode of the LNA to be a pass-through mode, otherwise, adjusting the working mode of the LNA to be an amplification mode;
specifically, when the WLAN connection is in the disconnected state or the RSSI is lower than any of the preset adjustment threshold, which indicates that the WLAN may have a bad condition due to the interference of the LTE, the operation mode of the LNA may be adjusted to the access mode, so as to stop amplifying the possible LTE interference signal, thereby reducing the interference of the LTE signal.
Thus, by adjusting the operating mode of the LNA, a balance is struck between increased WLAN sensitivity and reduced interference from LTE signals.
In practical applications, the obtaining module 91, the detecting module 92 and the adjusting module 93 may be implemented by a CPU, a Microprocessor (MCU), a Digital Signal Processor (DSP), or a field programmable array (FPGA) in a terminal.
A storage medium provided in an embodiment of the present invention stores thereon an executable program, and the executable program is executed by a processor to implement a method for reducing signal interference, as shown in fig. 5, where the method includes:
acquiring th signal parameter information of a th wireless communication network and second signal parameter information of a second wireless communication network at step 501;
the wireless communication network may be an LTE network, the second wireless communication network may be a WLAN, the wireless communication network and the second wireless communication network may be networks which can simultaneously communicate with terminals;
the th signal parameter information and the second signal parameter information can be obtained by a terminal baseband processor, etc., the th signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the th wireless communication network, the second signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the second wireless communication network, and the th wireless communication network and the second wireless communication network can be obtained by reading a wireless communication network register.
, obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network;
since co-frequency signal interference is most significant, it may be preferable to acquire the th signal operating frequency of the th wireless communication network and the second signal operating frequency of the second wireless communication network;
specifically, the operating frequency of LTE can be obtained by reading LTE registers, for example: b1, B2, B3, etc.; the operating frequency of the WLAN can be obtained by reading a WLAN register, for example: 2.5G, 5G, etc.
Step 502, when the th signal parameter information and the second signal parameter information accord with a preset signal interference condition, acquiring network connection information of the second wireless communication network;
here, the preset signal interference condition may be set according to a situation that interference actually occurs in actual working of LTE and WLAN; such as the case where harmonics of LTE interfere with WLAN signals; the network connection information of the second wireless communication network may be a current network connection status, a signal strength, and the like of the second wireless communication network.
, when the signal operating frequency is within a preset frequency range and the second signal operating frequency is within a preset second frequency range, acquiring network connection status information of the second wireless communication network and/or RSSI of the second wireless communication network;
specifically, the preset th frequency range may be a frequency at which the LTE network interferes with the WLAN, for example, when the LTE is in the preset th frequency range, the LTE harmonic or intermodulation product frequency interferes with the WLAN signal, the preset th frequency range may be a B5 frequency range or a B12+ B4 frequency range of a CA mode, the preset second frequency range may be a frequency range at which the LTE network interferes with the WLAN, the preset second frequency range may be a 2.4G frequency range of the WLAN, when the LTE is in the B12+ B4 frequency range of the B5 or CA mode and the WLAN is in the 2.4G frequency range, the WLAN signal is more easily interfered by the LTE, then, the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be obtained, and the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be extracted from the received signal.
Step 503: adjusting the working mode of an LNA of the second wireless communication network by adopting a preset adjusting rule according to the network connection information;
here, the operating mode of the LNA may be adjusted by a WiFi driver or the like through a baseband processor or the like;
the LNA not only can improve the sensitivity of a WLAN radio frequency channel, but also can reduce the IIP3 of the whole receiving path, so that after external interference signals leak, the IMD generated by the LNA can be very large, and the generated IMD signals are close to the receiving signals of the WLAN and can directly interfere with the main frequency;
the LNA has two working modes, namely a Bypass mode and an amplification mode, wherein the amplification mode is generally called a Non-Bypass mode, in the Bypass mode, the LNA does not amplify received signals any more, at the moment, the LNA has only paths for the passed signals, and at the moment, IMD (in-mold decoration) can be avoided, so that the interference of LTE (long term evolution) signals on WLAN (wireless local area network) signals is weakened;
the preset regulation rule can be set according to the influence degree of the interference degree on the second wireless communication network and can be set according to the result of the interference test; if the interference signal seriously affects the WLAN transmission after being amplified by the LNA, the amplification mode of the LNA can be turned off; if the effect of the interfering signal on the WLAN transmission after amplification by the LNA is within an acceptable range while the WLAN signal reception is more sensitive due to the LNA amplification, the LNA amplification mode may be turned on.
, when the second wireless communication network connection state is disconnection and/or RSSI is lower than the preset adjusting threshold, adjusting the working mode of the LNA to be a pass-through mode, otherwise, adjusting the working mode of the LNA to be an amplification mode;
specifically, when the WLAN connection is in the disconnected state or the RSSI is lower than any of the preset adjustment threshold, which indicates that the WLAN may have a bad condition due to the interference of the LTE, the operation mode of the LNA may be adjusted to the access mode, so as to stop amplifying the possible LTE interference signal, thereby reducing the interference of the LTE signal.
Thus, by adjusting the operating mode of the LNA, a balance is struck between increased WLAN sensitivity and reduced interference from LTE signals.
The information processing apparatus provided in the embodiment of the present invention includes a processor, a memory, and an executable program stored in the memory and capable of being executed by the processor, and executes a method for reducing signal interference when the processor executes the executable program, as shown in fig. 5, the method includes:
acquiring th signal parameter information of a th wireless communication network and second signal parameter information of a second wireless communication network at step 501;
the wireless communication network may be an LTE network, the second wireless communication network may be a WLAN, the wireless communication network and the second wireless communication network may be networks which can simultaneously communicate with terminals;
the th signal parameter information and the second signal parameter information can be obtained by a terminal baseband processor, etc., the th signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the th wireless communication network, the second signal parameter information can comprise parameters such as an operating frequency band and a transmission power level of the second wireless communication network, and the th wireless communication network and the second wireless communication network can be obtained by reading a wireless communication network register.
, obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network;
since co-frequency signal interference is most significant, it may be preferable to acquire the th signal operating frequency of the th wireless communication network and the second signal operating frequency of the second wireless communication network;
specifically, the operating frequency of LTE can be obtained by reading LTE registers, for example: b1, B2, B3, etc.; the operating frequency of the WLAN can be obtained by reading a WLAN register, for example: 2.5G, 5G, etc.
Step 502, when the th signal parameter information and the second signal parameter information accord with a preset signal interference condition, acquiring network connection information of the second wireless communication network;
here, the preset signal interference condition may be set according to a situation that interference actually occurs in actual working of LTE and WLAN; such as the case where harmonics of LTE interfere with WLAN signals; the network connection information of the second wireless communication network may be a current network connection status, a signal strength, and the like of the second wireless communication network.
, when the signal operating frequency is within a preset frequency range and the second signal operating frequency is within a preset second frequency range, acquiring network connection status information of the second wireless communication network and/or RSSI of the second wireless communication network;
specifically, the preset th frequency range may be a frequency at which the LTE network interferes with the WLAN, for example, when the LTE is in the preset th frequency range, the LTE harmonic or intermodulation product frequency interferes with the WLAN signal, the preset th frequency range may be a B5 frequency range or a B12+ B4 frequency range of a CA mode, the preset second frequency range may be a frequency range at which the LTE network interferes with the WLAN, the preset second frequency range may be a 2.4G frequency range of the WLAN, when the LTE is in the B12+ B4 frequency range of the B5 or CA mode and the WLAN is in the 2.4G frequency range, the WLAN signal is more easily interfered by the LTE, then, the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be obtained, and the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network may be extracted from the received signal.
Step 503: adjusting the working mode of an LNA of the second wireless communication network by adopting a preset adjusting rule according to the network connection information;
here, the operating mode of the LNA may be adjusted by a WiFi driver or the like through a baseband processor or the like;
the LNA not only can improve the sensitivity of a WLAN radio frequency channel, but also can reduce the IIP3 of the whole receiving path, so that after external interference signals leak, the IMD generated by the LNA can be very large, and the generated IMD signals are close to the receiving signals of the WLAN and can directly interfere with the main frequency;
the LNA has two working modes, namely a Bypass mode and an amplification mode, wherein the amplification mode is generally called a Non-Bypass mode, in the Bypass mode, the LNA does not amplify received signals any more, at the moment, the LNA has only paths for the passed signals, and at the moment, IMD (in-mold decoration) can be avoided, so that the interference of LTE (long term evolution) signals on WLAN (wireless local area network) signals is weakened;
the preset regulation rule can be set according to the influence degree of the interference degree on the second wireless communication network and can be set according to the result of the interference test; if the interference signal seriously affects the WLAN transmission after being amplified by the LNA, the amplification mode of the LNA can be turned off; if the effect of the interfering signal on the WLAN transmission after amplification by the LNA is within an acceptable range while the WLAN signal reception is more sensitive due to the LNA amplification, the LNA amplification mode may be turned on.
, when the second wireless communication network connection state is disconnection and/or RSSI is lower than the preset adjusting threshold, adjusting the working mode of the LNA to be a pass-through mode, otherwise, adjusting the working mode of the LNA to be an amplification mode;
specifically, when the WLAN connection is in the disconnected state or the RSSI is lower than any of the preset adjustment threshold, which indicates that the WLAN may have a bad condition due to the interference of the LTE, the operation mode of the LNA may be adjusted to the access mode, so as to stop amplifying the possible LTE interference signal, thereby reducing the interference of the LTE signal.
Thus, by adjusting the operating mode of the LNA, a balance is struck between increased WLAN sensitivity and reduced interference from LTE signals.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1, a method for reducing signal interference, the method comprising:
acquiring the th signal parameter information of the th wireless communication network and the second signal parameter information of the second wireless communication network;
when the th signal parameter information and the second signal parameter information meet a preset signal interference condition, network connection information of the second wireless communication network is acquired;
and adjusting the working mode of a Low Noise Amplifier (LNA) of the second wireless communication network by adopting a preset adjusting rule according to the network connection information.
2. The method of claim 1, wherein the obtaining of the st signal parameter information of the th wireless communication network and the second signal parameter information of the second wireless communication network comprises:
obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network.
3. The method of claim 2, wherein the th signal parameter information and the second signal parameter information meet a predetermined signal interference condition, comprising:
the th signal operating frequency is within a preset th frequency range, and the second signal operating frequency is within a preset second frequency range;
the acquiring network connection information of the second wireless communication network includes:
and acquiring the network connection state information of the second wireless communication network and/or the Received Signal Strength Indication (RSSI) of the second wireless communication network.
4. The method according to claim 3, wherein the adjusting the operation mode of the Low Noise Amplifier (LNA) of the second wireless communication network according to the network connection information by using a preset adjustment rule comprises:
when the second wireless communication network is disconnected and/or the RSSI is lower than a preset adjustment threshold value, adjusting the working mode of the LNA to be a channel mode; otherwise, the working mode of the LNA is adjusted to an amplification mode.
5, A device for reducing signal interference, which is characterized in that the device comprises an acquisition module, a detection module and an adjustment module,
the acquiring module is used for acquiring the th signal parameter information of the th wireless communication network and the second signal parameter information of the second wireless communication network;
the detection module is configured to acquire network connection information of the second wireless communication network when the th signal parameter information and the second signal parameter information meet a preset signal interference condition;
and the adjusting module is used for adjusting the working mode of the LNA of the second wireless communication network by adopting a preset adjusting rule according to the network connection information.
6. The apparatus of claim 5, wherein the obtaining module is specifically configured to:
obtaining a th signal operating frequency of the th wireless communication network and a second signal operating frequency of the second wireless communication network.
7. The apparatus according to claim 6, wherein the detection module is specifically configured to:
and when the th signal working frequency is within a preset frequency range and the second signal working frequency is within a preset second frequency range, acquiring the network connection state information of the second wireless communication network and/or the RSSI of the second wireless communication network.
8. The apparatus of claim 7, wherein the adjustment module is specifically configured to:
when the second wireless communication network is disconnected and/or the RSSI is lower than a preset adjustment threshold value, adjusting the working mode of the LNA to be a channel mode; otherwise, the working mode of the LNA is adjusted to an amplification mode.
Storage medium 9, , on which an executable program is stored, wherein the executable program when executed by a processor implements the steps of the method for reducing signal interference according to any of claims 1 to 4 to .
A signal interference reduction apparatus of , comprising a processor, a memory and an executable program stored on the memory and capable of being executed by the processor, wherein the processor executes the executable program to perform the steps of the signal interference reduction method of any of claims 1-4 through .
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| CN201810798769.0A CN110740463A (en) | 2018-07-19 | 2018-07-19 | method and device for reducing signal interference |
| PCT/CN2019/096847 WO2020015747A1 (en) | 2018-07-19 | 2019-07-19 | Method and apparatus for reducing signal interference |
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| CN201810798769.0A CN110740463A (en) | 2018-07-19 | 2018-07-19 | method and device for reducing signal interference |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120315950A1 (en) * | 2011-06-13 | 2012-12-13 | Chi Mei Communication Systems, Inc. | Dual mode mobile communication terminal |
| CN105657809A (en) * | 2016-02-01 | 2016-06-08 | 深圳市至高通信技术发展有限公司 | WLAN (Wireless Local Area Network) transmission system and signal transmission method for WLAN system |
| CN105991147A (en) * | 2015-02-13 | 2016-10-05 | 展讯通信（上海）有限公司 | Communication receiving access and control method thereof |
| CN106851690A (en) * | 2017-02-28 | 2017-06-13 | 广东欧珀移动通信有限公司 | wireless network scanning method, device and computer equipment |
| CN107846723A (en) * | 2017-12-13 | 2018-03-27 | 广东欧珀移动通信有限公司 | Wireless local area network scan method, apparatus, computer equipment and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8964877B2 (en) * | 2012-06-19 | 2015-02-24 | Texas Instruments Incorporated | Changing power to first transmission signals upon detecting ISM band |
| US9094835B2 (en) * | 2013-03-15 | 2015-07-28 | Intel Mobile Communications GmbH | Radio communication device and method for operating a radio communication device |
| CN105978512A (en) * | 2016-05-06 | 2016-09-28 | 江苏卓胜微电子有限公司 | Low-noise amplifier with multi-configurable bypass mode |
| CN108649991B (en) * | 2018-04-28 | 2019-11-05 | 维沃移动通信有限公司 | A kind of processing method and mobile terminal of harmonic wave interference |
-
2018
- 2018-07-19 CN CN201810798769.0A patent/CN110740463A/en active Pending
-
2019
- 2019-07-19 WO PCT/CN2019/096847 patent/WO2020015747A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120315950A1 (en) * | 2011-06-13 | 2012-12-13 | Chi Mei Communication Systems, Inc. | Dual mode mobile communication terminal |
| CN105991147A (en) * | 2015-02-13 | 2016-10-05 | 展讯通信（上海）有限公司 | Communication receiving access and control method thereof |
| CN105657809A (en) * | 2016-02-01 | 2016-06-08 | 深圳市至高通信技术发展有限公司 | WLAN (Wireless Local Area Network) transmission system and signal transmission method for WLAN system |
| CN106851690A (en) * | 2017-02-28 | 2017-06-13 | 广东欧珀移动通信有限公司 | wireless network scanning method, device and computer equipment |
| CN107846723A (en) * | 2017-12-13 | 2018-03-27 | 广东欧珀移动通信有限公司 | Wireless local area network scan method, apparatus, computer equipment and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| MEDIATEK: "R2-114201 "Evaluation on DRX based TDM Solution"", 《3GPP TSG_RAN\WG2_RL2》 * |
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