CN114916071A

CN114916071A - Near field communication module, electronic equipment and near field communication method

Info

Publication number: CN114916071A
Application number: CN202110186830.8A
Authority: CN
Inventors: 张烨
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-16
Also published as: WO2022170906A1

Abstract

The embodiment of the application provides a near field communication module, electronic equipment and a near field communication method, wherein the near field communication module comprises an antenna and a near field communication module, wherein the antenna is used for transmitting communication signals; the input processing module is connected with the antenna; the digital signal processing module is connected with the input processing module and is used for identifying the frequency and the bandwidth of an interference signal in the digital signal, generating frequency configuration information according to the frequency of the interference signal and generating bandwidth configuration information according to the bandwidth of the interference signal; the frequency configuration module is also used for sending frequency configuration information and bandwidth configuration information to the input processing module; the input processing module is used for adjusting the module capacity configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters interference signals in the communication signals. The embodiment of the application provides a solution for dynamically capturing an interference signal source and performing targeted filtering aiming at the signal interference problem of a near field communication module.

Description

Near field communication module, electronic equipment and near field communication method

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a near field communication module, electronic equipment and a near field communication method.

Background

At present, along with the widening of functions of mobile phones and the deepening of user demands, near field communication modules with large bandwidth need to be used in electronic equipment such as smart phones, and a narrow-band far field communication module of an original mobile phone can cause signal interference to the near field communication modules.

Disclosure of Invention

The application provides a near field communication module, electronic equipment and a near field communication method, and aims to provide a solution scheme for dynamically capturing an interference signal source and performing targeted filtering aiming at the signal interference problem of the near field communication module.

In a first aspect, an embodiment of the present application provides a near field communication module, which includes

An antenna for transmitting communication signals;

the input processing module is connected with the antenna and used for processing the communication signal and outputting a digital signal;

the digital signal processing module is connected with the input processing module and is used for identifying the frequency and the bandwidth of an interference signal in the digital signal, generating frequency configuration information according to the frequency of the interference signal and generating bandwidth configuration information according to the bandwidth of the interference signal; the digital signal processing module is further configured to send the frequency configuration information and the bandwidth configuration information to the input processing module;

the input processing module is configured to receive the frequency configuration information and the bandwidth configuration information, and adjust module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal;

and the modulation and demodulation module is connected with the input processing module and is used for modulating and demodulating the digital signal.

It can be seen that, in this example, since the digital signal processing module of the near field communication module can identify the frequency and the bandwidth of the interference signal, generate frequency configuration information according to the frequency of the interference signal, generate bandwidth configuration information according to the bandwidth of the interference signal, and send the frequency configuration information and the bandwidth configuration information to the input processing module, the input processing module can adjust the module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal, without adding other hardware devices or adjusting the timing sequence of the near field communication module, dynamically captures the interference signal source by using a pure software method of the digital signal processing module to perform targeted filtering, and does not need to provide any limitation on the antenna isolation between the near field communication module and other chips on the electronic device such as a mobile phone, the operability of the near field communication module on the electronic equipment is greatly improved, and the threshold for entering is reduced.

In a second aspect, an embodiment of the present application provides an electronic device, which includes a near field communication module and a far field communication module;

the near field communication module includes:

an antenna for transmitting communication signals;

the input processing module is connected with the antenna and used for outputting a digital signal after processing the communication signal;

In a third aspect, an embodiment of the present application provides a near field communication method, which is applied to an electronic device, where the electronic device includes a near field communication module and a far field communication module, and the near field communication module includes an antenna, an input processing module, a digital signal processing module, and a modulation and demodulation module;

the antenna is connected with the input processing module, and the input processing module is connected with the digital signal processing module and the modulation and demodulation module;

the method comprises the following steps:

transmitting a communication signal through the antenna;

the communication signal is processed by the input processing module and then a digital signal is output;

identifying the frequency and the bandwidth of an interference signal in the digital signal through the digital signal processing module, generating frequency configuration information according to the frequency of the interference signal, and generating bandwidth configuration information according to the bandwidth of the interference signal; and sending the frequency configuration information and the bandwidth configuration information to the input processing module;

receiving, by the input processing module, the frequency configuration information and the bandwidth configuration information, and adjusting module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal;

and carrying out modulation and demodulation on the digital signal through the modulation and demodulation module.

It can be seen that, in this example, since the digital signal processing module of the near field communication module can identify the frequency and the bandwidth of the interference signal, generate frequency configuration information according to the frequency of the interference signal, generate bandwidth configuration information according to the bandwidth of the interference signal, and send the frequency configuration information and the bandwidth configuration information to the input processing module, so that the input processing module can perform module capability configuration adjustment according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal, the scheme does not need to add other hardware devices or adjust the time sequence of the near field communication module, dynamically captures the interference signal source by using a pure software method of the digital signal processing module to perform targeted filtering, and does not need to put any limit on the antenna isolation between the near field communication module and other chips and the like on the electronic device such as a mobile phone, the operability of the near field communication module on the electronic equipment is greatly improved, and the threshold for entering is reduced.

In a fourth aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, a near field communication module, a far field communication module, and one or more programs, where the near field communication module includes an antenna, an input processing module, a digital signal processing module, and a modem module; the antenna is connected with the input processing module, and the input processing module is connected with the digital signal processing module and the modulation and demodulation module;

wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in any of the methods of the third aspect of the embodiments of the present application.

In a fifth aspect, an embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes part or all of the steps described in any method of the third aspect of the embodiment of the application.

In a sixth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps as described in any one of the methods in the third aspect of the present application.

In a seventh aspect, embodiments of the present application provide a computer program, where the computer program is operable to cause a computer to perform some or all of the steps described in any one of the methods in the third aspect of the embodiments of the present application. The computer program may be a software installation package.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1a is a schematic diagram of a distance measurement method using time of flight via radio signals according to an embodiment of the present application;

fig. 1b is a schematic diagram of signal transmission provided in the embodiment of the present application;

fig. 1c is a schematic diagram of a ratio of signal bandwidths in fourier transform according to an embodiment of the present application;

FIG. 1d is a schematic diagram of each pulse of a UWB signal provided by embodiments of the present application;

FIG. 1e is a schematic diagram of a broadband noise signal provided by an embodiment of the present application;

FIG. 1f is a schematic frequency diagram of ch5 and ch9 according to an embodiment of the present application;

fig. 1g is a schematic diagram of frequency bands supported by different systems of a mobile phone according to an embodiment of the present application;

fig. 2a is a schematic structural diagram of a near field communication module 10 according to an embodiment of the present disclosure;

fig. 2b is a schematic structural diagram of another nfc module 10 according to an embodiment of the present disclosure;

fig. 2c is a schematic structural diagram of another nfc module 10 according to an embodiment of the present disclosure;

fig. 2d is a schematic structural diagram of another nfc module 10 according to an embodiment of the present disclosure;

fig. 2e is a schematic structural diagram of another nfc module 10 according to an embodiment of the present disclosure;

fig. 2f is a schematic structural diagram of another nfc module 10 according to an embodiment of the present disclosure;

FIG. 2g is a waveform diagram of an interference signal with a center frequency of-0.1 GHz according to an embodiment of the present application;

fig. 2h is a schematic diagram illustrating a waveform amplification of the interference signal in fig. 2b according to an embodiment of the present disclosure;

fig. 2i is a waveform diagram of bandwidth configuration information of a 10MHz bandwidth provided by an embodiment of the present application;

fig. 2j is a waveform diagram of bandwidth configuration information of a 50MHz bandwidth provided in an embodiment of the present application;

fig. 2k is a waveform diagram of bandwidth configuration information of a 100MHz bandwidth provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of an electronic device 1 according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a near field communication method provided in an embodiment of the present application;

fig. 5 is a block diagram of functional units of a near field communication device 5 according to an embodiment of the present disclosure;

fig. 6 is a block diagram of functional units of a near field communication device 6 according to an embodiment of the present disclosure.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all 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 application.

The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The traditional UWB positioning is used in industrial places such as mines, warehouses and the like, the main application scene is to monitor staff and goods, as shown in figure 1a, the indoor UWB ranging principle is the same as the GNSS satellite positioning principle, the distance is measured and calculated by using the Time of flight of radio signals, in the figure, PRI represents a pulse repetition period, TOA represents the signal flight Time, TX represents a signal sending end, and RX represents a signal receiving end.

The conventional UWB ranging is identified by a pulse signal, and has a good suppression effect on Multipath interference, as shown in fig. 1b, Direct indicates Direct transmission without signal refraction, Directpath indicates single-path transmission, and Multipath indicates Multipath transmission.

UWB is an ultra-wideband pulse signal, the shorter the duration of the pulse signal is, the easier the signal is to be identified, and the wider the spectrum resource occupied after fourier transform is, as shown in fig. 1c, in fourier transform, the stronger the signal periodicity is, the smaller the bandwidth occupied on the spectrum is, and the UWB signal is a pulse of one period, so that the bandwidth on the spectrum occupies 100% in total.

As shown in FIG. 1d, each pulse of the UWB signal resembles a sinusoidal sine wave within a period, with the frequency spectrum resembling the wide-band noise signal shown in FIG. 1e by the different spacing between each pulse.

The mobile phone is provided with a cellular communication module and a UWB communication module at the same time. The maximum transmitting power of the cellular communication module is 23dBm, and the maximum transmitting power of the UWB communication module is about-14 dBm. Typically, the cellular communication module interferes with the UWB communication module, which cannot interfere with the cellular communication module.

As shown in FIG. 1f, the UWB frequency bands of ch5 and ch9 have center frequency points of 6489.6Mhz and 7987.2Mhz, respectively, and the working bandwidth is 500 Mhz.

The cellular and WIFI frequency bands of the mobile phone refer to the export version of Compass 2 mobile phones, the frequency bands are comprehensive, and the frequency band range of global operators is covered. Specifically, the supported frequency band is shown in fig. 1G, where GSM represents a global system for mobile communications, WCDMA represents wideband code division multiple access, and corresponds to 3G cellular network communications, FDD-LTE represents frequency division multiplexing-long term evolution technology, and corresponds to a 4G mobile communications system, and 5G NR represents 5G new air interface communications.

At present, an ultra-wideband (UWB) chip works at 6.5GHz and 8GHz, the working bandwidth is 500Mhz, the maximum transmitting power is about-14 dBm, and second harmonic, third harmonic or third order intermodulation products of a cellular module are likely to fall in or beside the UWB band, so that great interference is brought to the communication of the UWB chip. For example, when N77 operates in the 3.3GHz band, the second harmonic of 6.6GHz will fall within the UWB band.

For the interference of cellular signals, a filter is added in a UWB chip to suppress the influence of the cellular signals, but because an interference signal source is unknown, the energy size is unknown, the carrier frequency is unknown, and the bandwidth is unknown, the interference source needs to be detected and judged at a UWB end, and then the filter is adjusted to completely filter the influence of the cellular signals.

In view of the above technical background, the present application provides a near field communication module, an electronic device, and a near field communication method, which are described in detail below with reference to the accompanying drawings.

Referring to fig. 2a, fig. 2a is a schematic structural diagram of a nfc module 10 according to an embodiment of the present disclosure. The near field communication module 10 includes:

an antenna 100 for transmitting communication signals;

an input processing module 200, connected to the antenna 100, for processing the communication signal and outputting a digital signal;

a digital signal processing module 300, connected to the input processing module 200, configured to identify a frequency and a bandwidth of an interference signal in the digital signal, generate frequency configuration information according to the frequency of the interference signal, and generate bandwidth configuration information according to the bandwidth of the interference signal; the digital signal processing module 300 is further configured to send the frequency configuration information and the bandwidth configuration information to the input processing module;

the input processing module 200 is configured to receive the frequency configuration information and the bandwidth configuration information, and adjust module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module 200 filters the interference signal in the communication signal;

a modulation and demodulation module 400 connected to the input processing module 200, configured to perform modulation and demodulation on the digital signal.

Wherein, the near field communication module 10 includes an ultra-wideband UWB communication module.

The interference signal comprises a transmission signal of the far-field communication module. The bandwidth of the near field communication module 10 is greater than the bandwidth of the far field communication module.

Wherein, the far field communication module 10 includes any one of the following: cellular communication module, wireless high fidelity Wi-Fi communication module. For example, the third harmonic of the Wi-Fi6 signal of 2.4GHz, and the component of the Wi-Fi6 signal on the carrier frequency above 6GHz can use the scheme, and do not generate any interference on the UWB signal in the band.

In one possible example, as shown in fig. 2b, the input processing module 200 includes a low noise amplification module 210, a mixing module 220, a filtering module 230, and an analog-to-digital conversion module 240;

the antenna 100 is connected to the low noise amplification module 210, the low noise amplification module 210 is connected to the frequency mixing module 220, the frequency mixing module 220 is connected to the filtering module 230, the filtering module 230 is connected to the analog-to-digital conversion module 240, the analog-to-digital conversion module 240 is respectively connected to the digital signal processing module 300 and the modem module 400, and the digital signal processing module 300 is respectively connected to the frequency mixing module 220 and the filtering module 230;

the digital signal processing module 300 is configured to send the frequency configuration information to the frequency mixing module 220 and send the bandwidth configuration information to the filtering module 230;

the frequency mixing module 220 is configured to receive the frequency configuration information, and adjust a frequency of the carrier frequency of the frequency mixing module corresponding to the frequency of the interference signal according to the frequency configuration information, so that a center frequency of an output signal of the frequency mixing module 220 corresponds to the frequency of the interference signal;

the filtering module 230 is configured to receive the bandwidth configuration information, and configure a bandwidth of the filtering module 230 corresponding to the bandwidth of the interference signal according to the bandwidth configuration information, so as to filter the interference signal.

The low noise amplification module 210 is configured to perform low noise amplification processing on the communication signal. The analog-to-digital conversion module 240 is used for converting an analog signal into a digital signal.

In this example, the mixing module 220 and the filtering module 230 of the input processing module 200 can be updated by configuration so that the input processing module 200 has the capability of filtering out the interference signal.

In this possible example, as shown in fig. 2c, the low noise amplification module 210 includes a low noise amplifier 211, and the low noise amplifier 211 is connected to the antenna 100 and is configured to perform low noise amplification processing on the communication signal.

In one possible example, as shown in fig. 2d, the mixing module 220 includes a local oscillator 221, an in-direction component multiplier 222 and a quadrature component multiplier 223, the filtering module 230 includes an in-direction component filter 231 and a quadrature component filter 232, and the analog-to-digital conversion module 240 includes an in-direction component analog-to-digital converter 241 and a quadrature component analog-to-digital converter 242;

the local oscillator 221 is connected to the in-phase component multiplier 222, the quadrature component multiplier 223 and the digital signal processing module 300, the low noise amplification block 210 is connected to the in-phase component multiplier 222 and the quadrature component multiplier 223, the in-phase component multiplier 222 is connected to the in-phase component filter 231, the in-phase component filter 231 is connected to the in-phase component analog-to-digital converter 241, the quadrature component multiplier 223 is connected to the quadrature component filter 232, the quadrature component filter 232 is connected to the quadrature component analog-to-digital converter 242, the in-phase component analog-to-digital converter 241 and the quadrature component analog-to-digital converter 242 are connected to the digital signal processing module 300 and the modem module 400, the digital signal processing module 300 is connected to the in-phase component filter 231 and the quadrature component filter 232;

the local oscillator 221 is configured to receive the frequency configuration information, and adjust a carrier frequency of the local oscillator 221 corresponding to a frequency of the interference signal according to the frequency configuration information, the cocurrent component multiplier 222 is configured to output a cocurrent component mixed signal whose center frequency corresponds to the frequency of the interference signal, and the orthogonal component multiplier 223 is configured to output an orthogonal component mixed signal whose center frequency corresponds to the frequency of the interference signal;

the homodyne component filter 231 is configured to receive the bandwidth configuration information, and filter the homodyne component mixing signal to filter a homodyne component of the interference signal; the orthogonal component filter 232 is configured to receive the bandwidth configuration information, and filter the orthogonal component mixing signal to filter an orthogonal component of the interference signal.

The same-direction component analog-to-digital converter and the orthogonal-component analog-to-digital converter are used for converting the type of the signal into a digital signal.

Here, the in-phase component filter 231 and the quadrature component filter 232 may be notch filters, which are special band-stop filters having a stopband with only one frequency point in an ideal case, and are also called point-stop filters. Such filters are mainly used to eliminate interference at a particular frequency.

The modem 410 is configured to receive a co-directional component intermediate frequency signal from which a co-directional component of the interference signal is filtered, receive an orthogonal component intermediate frequency signal from which an orthogonal component of the interference signal is filtered, and synthesize the co-directional component intermediate frequency signal and the orthogonal component intermediate frequency signal into a complex intermediate frequency signal.

The mixer formed by the in-phase component filter 231, the quadrature component filter 232, and the local oscillator 221 includes an IQ mixer.

Therefore, in this example, the input processing module adopts a solution of dual-path modulation of the homodromous component and the orthogonal component, which is beneficial to reducing the size of the module and improving the anti-interference capability.

In one possible example, as shown in fig. 2e, the mixing module 220 comprises a multiplier 224 and a local oscillator 221, the filtering module 230 comprises a filter 233, and the analog-to-digital converting module 240 comprises an analog-to-digital converter 243;

the local oscillator 221 is connected to the multiplier 224, the low noise amplification module 210 is connected to the multiplier 224, the multiplier 224 is connected to the filter 233, the filter 233 is connected to the analog-to-digital converter 243, the analog-to-digital converter 243 is connected to the digital signal processing module 300 and the modem module 400, and the digital signal processing module 300 is connected to the local oscillator 221;

the local oscillator 221 is configured to receive the frequency configuration information, and adjust a carrier frequency of the local oscillator 221 corresponding to a frequency of the interference signal according to the frequency configuration information, and the multiplier 224 is configured to output a mixed signal whose center frequency corresponds to the frequency of the interference signal;

the filter 233 is configured to receive the bandwidth configuration information, and filter the mixing signal of which the center frequency corresponds to the frequency of the interference signal to filter the interference signal.

It can be seen that in this example, the input processing module can implement targeted cancellation of the interference signal using a single-channel signal processing circuit.

In one possible example, as shown in fig. 2f, the digital signal processing module 300 comprises a digital signal processor 310 and the modem module 400 comprises a modem 410.

The DSP 310 may be a dedicated DSP chip, and the modem 410 may be a modulator and a demodulator in a dedicated wideband far-field communication chip.

In one possible example, the near field communication module 10 comprises an ultra-wideband UWB communication module.

In a specific implementation, after the digital signal processing module 300 identifies the frequency and the bandwidth of the interference signal, frequency configuration information may be generated according to the frequency of the interference signal, and bandwidth configuration information may be generated according to the bandwidth of the interference signal.

For example, assuming that the near field communication module 10 is a UWB chip, the interference signal is a cellular signal, the operating frequency of the UWB chip is 6.5GHz, the local oscillator 221 is configured to be 6.5GHz when there is no interference signal, and after the interference signal occurs,

if looking at the FFT spectrum at the back end of the cocurrent component adc 241 and the quadrature component adc 242 to find that the frequency of the interference signal is 0.2GHz, it can be known that the carrier frequency of the interference signal is 6.7GHz, and the local oscillator 221 needs to be configured to be 6.7 GHz.

As shown in fig. 2g, if the back ends of the cocurrent component analog-to-digital converter 241 and the orthogonal component analog-to-digital converter 242 find that the center frequency of the interference signal is-0.1 GHz (there is a narrowband LTE signal interference in the normal UWB signal band) according to the FFT spectrum, it is known that the carrier frequency of the interference signal is 6.4GHz, and the local oscillator 221 needs to be configured to be 6.4 GHz.

As shown in fig. 2h, after amplifying fig. 2g, it can be seen that the interference source of the LTE signal is not a normal continuous wave CW signal, but an LTE modulated signal with a certain bandwidth. It can be seen from the following figure that it is an LTE signal with a bandwidth of about 4 MHz. Therefore, the digital signal processing module 300 may set the bandwidth configuration information to be 4MHz and send the bandwidth configuration information to the equidirectional component filter 231 and the orthogonal component filter 232, so as to cause the equidirectional component filter 231 and the orthogonal component filter 232 to filter the equidirectional component and the orthogonal component of the LTE signal with the 4MHz bandwidth, respectively.

It should be noted that the bandwidth set in the bandwidth configuration information may be 10MHz, 50MHz to 100MHz, as shown in fig. 2i, it is a waveform diagram of the bandwidth configuration information of 10MHz bandwidth, as shown in fig. 2j, it is a waveform diagram of the bandwidth configuration information of 50MHz bandwidth, and as shown in fig. 2k, it is a waveform diagram of the bandwidth configuration information of 100MHz bandwidth.

It can be seen that in this example, the digital signal processing module 300 can dynamically adjust for different interference sources of interference signals, such as cellular signals, to avoid interference of low-power near-field communication signals, such as UWB signals, by high-power other far-field communication signals on the mobile phone.

It can be seen that, in the embodiment of the present application, since the digital signal processing module of the near field communication module can identify the frequency and the bandwidth of the interference signal, generate frequency configuration information according to the frequency of the interference signal, generate bandwidth configuration information according to the bandwidth of the interference signal, and send the frequency configuration information and the bandwidth configuration information to the input processing module, so that the input processing module can perform adjustment of module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal, the scheme does not need to add other hardware devices or adjust the timing sequence of the near field communication module, dynamically captures the interference signal source for targeted filtering by a pure software method of the digital signal processing module, and does not need to put any limit on the antenna isolation between the near field communication module and other chips and the like on the electronic equipment such as a mobile phone, the operability of the near field communication module on the electronic equipment is greatly improved, and the threshold for entering is reduced.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device 1 according to an embodiment of the present disclosure. The electronic device 1 comprises a near field communication module 10 and a far field communication module 20;

the near field communication module 10 includes:

an antenna 100 for transmitting communication signals;

The electronic device 1 may be a terminal device such as a mobile phone, which is not limited herein.

It can be seen that, in the embodiment of the present application, since the digital signal processing module of the near field communication module can identify the frequency and the bandwidth of the interference signal, generate frequency configuration information according to the frequency of the interference signal, generate bandwidth configuration information according to the bandwidth of the interference signal, and send the frequency configuration information and the bandwidth configuration information to the input processing module, so that the input processing module can perform adjustment of module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal, the scheme does not need to add other hardware devices, does not need to adjust the time sequence of the near field communication module, dynamically captures the interference signal source for targeted filtering by using a pure software method of the digital signal processing module, and does not need to put any limit on the antenna isolation between the near field communication module and other chips and the like on the electronic device such as a mobile phone, the operability of the near field communication module on the electronic equipment is greatly improved, and the threshold for entering is reduced.

Referring to fig. 4, fig. 4 is a flowchart illustrating a near field communication method according to an embodiment of the present application, applied to the electronic device 1 shown in fig. 2a, where the near field communication method includes the following operations.

Step 401, transmitting a communication signal through the antenna;

step 402, processing the communication signal by the input processing module and outputting a digital signal;

step 403, identifying the frequency and bandwidth of an interference signal in the digital signal by the digital signal processing module, generating frequency configuration information according to the frequency of the interference signal, and generating bandwidth configuration information according to the bandwidth of the interference signal; and sending the frequency configuration information and the bandwidth configuration information to the input processing module;

step 404, receiving, by the input processing module, the frequency configuration information and the bandwidth configuration information, and adjusting module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal;

step 405, performing modulation and demodulation on the digital signal through the modulation and demodulation module.

In one possible example, the input processing module includes a low noise amplification module, a mixing module, a filtering module, and an analog-to-digital conversion module;

the antenna is connected with the low-noise amplification module, the low-noise amplification module is connected with the frequency mixing module, the frequency mixing module is connected with the filtering module, the filtering module is connected with the analog-to-digital conversion module, the analog-to-digital conversion module is respectively connected with the digital signal processing module and the modulation and demodulation module, and the digital signal processing module is respectively connected with the frequency mixing module and the filtering module; in the method, the raw material is subjected to vacuum distillation,

the digital signal processing module is specifically configured to send the frequency configuration information to the frequency mixing module and send the bandwidth configuration information to the filtering module;

the frequency mixing module is configured to receive the frequency configuration information, and adjust a frequency of the carrier frequency of the frequency mixing module corresponding to the frequency of the interference signal according to the frequency configuration information, so that a center frequency of an output signal of the frequency mixing module corresponds to the frequency of the interference signal;

the filtering module is configured to receive the bandwidth configuration information, and configure a bandwidth of the filtering module corresponding to the bandwidth of the interference signal according to the bandwidth configuration information, so as to filter the interference signal.

In one possible example, the low noise amplification module includes a low noise amplifier, and the low noise amplifier is connected to the antenna and is configured to perform low noise amplification processing on the communication signal.

In one possible example, the mixing module includes a local oscillator, a co-component multiplier and a quadrature component multiplier, the filtering module includes a co-component filter and a quadrature component filter, and the analog-to-digital conversion module includes a co-component analog-to-digital converter and a quadrature component analog-to-digital converter;

the local oscillator is respectively connected with the same-direction component multiplier, the orthogonal component multiplier and the digital signal processing module, the low noise amplification module is respectively connected with the homodromous component multiplier and the orthogonal component multiplier, the same-direction component multiplier is connected with the same-direction component filter, the same-direction component filter is connected with the same-direction component analog-to-digital converter, the quadrature component multiplier is connected to the quadrature component filter, the quadrature component filter is connected to the quadrature component analog-to-digital converter, the cocurrent component analog-to-digital converter and the orthogonal component analog-to-digital converter are respectively connected with the digital signal processing module, the cocurrent component analog-to-digital converter and the orthogonal component analog-to-digital converter are respectively connected with the modulation and demodulation module, the digital signal processing module is respectively connected with the homodromous component filter and the orthogonal component filter;

the local oscillator is configured to receive the frequency configuration information, and adjust a frequency of the local oscillator corresponding to the frequency of the interference signal according to the frequency configuration information, the cocurrent component multiplier is configured to output a cocurrent component mixing signal whose center frequency corresponds to the frequency of the interference signal, and the quadrature component multiplier is configured to output a quadrature component mixing signal whose center frequency corresponds to the frequency of the interference signal;

the homodromous component filter is used for receiving the bandwidth configuration information and filtering the homodromous component mixing signal to filter the homodromous component of the interference signal; the orthogonal component filter is used for receiving the bandwidth configuration information and filtering the orthogonal component mixing signal to filter the orthogonal component of the interference signal.

In one possible example, the mixing module includes a multiplier and a local oscillator, the filtering module includes a filter, and the analog-to-digital conversion module includes an analog-to-digital converter;

the local oscillator is connected with the multiplier, the low noise amplification module is connected with the multiplier, the multiplier is connected with the filter, the filter is connected with the analog-to-digital converter, the analog-to-digital converter is respectively connected with the digital signal processing module and the modulation and demodulation module, and the digital signal processing module is connected with the local oscillator;

the local oscillator is configured to receive the frequency configuration information, adjust a frequency of the carrier frequency of the local oscillator corresponding to the frequency of the interference signal according to the frequency configuration information, and the multiplier is configured to output a mixed signal having a center frequency corresponding to the frequency of the interference signal;

the filter is configured to receive the bandwidth configuration information, and filter the mixing signal of which the center frequency corresponds to the frequency of the interference signal to filter the interference signal.

In one possible example, the digital signal processing module comprises a digital signal processor and the modem module comprises a modem.

In one possible example, the near field communication module comprises an ultra-wideband UWB communication module.

In one possible example, the jamming signal comprises a transmission signal of a far-field communication module.

In one possible example, the far-field communication module comprises any one of the following: cellular communication module, wireless high-fidelity Wi-Fi communication module.

The embodiment of the application provides a near field communication device which can be a mobile terminal. In particular, the near field communication device is configured to perform the steps performed by the mobile terminal in the above near field communication method. The near field communication device provided by the embodiment of the application may include modules corresponding to the respective steps.

In the embodiment of the present application, the functional modules of the near field communication device may be divided according to the above method example, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The division of the modules in the embodiment of the present application is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

Fig. 5 shows a possible structure diagram of the near field communication device according to the above embodiment, in the case of dividing each functional module according to each function. As shown in fig. 5, the near field communication device 5 is applied to the electronic apparatus 1 shown in fig. 3; the device comprises:

a transmission unit 30 for transmitting a communication signal through the antenna;

an input processing unit 31, configured to output a digital signal after processing the communication signal by the input processing module;

an interference identification unit 32, configured to identify, by the digital signal processing module, a frequency and a bandwidth of an interference signal in the digital signal, generate frequency configuration information according to the frequency of the interference signal, and generate bandwidth configuration information according to the bandwidth of the interference signal; and sending the frequency configuration information and the bandwidth configuration information to the input processing module;

a configuration updating unit 33, configured to receive the frequency configuration information and the bandwidth configuration information through the input processing module, and adjust module capability configuration according to the frequency configuration information and the bandwidth configuration information, so that the adjusted input processing module filters the interference signal in the communication signal;

a modulation and demodulation unit 34, configured to perform modulation and demodulation on the digital signal through the modulation and demodulation module.

the antenna is connected with the low-noise amplification module, the low-noise amplification module is connected with the frequency mixing module, the frequency mixing module is connected with the filtering module, the filtering module is connected with the analog-to-digital conversion module, the analog-to-digital conversion module is respectively connected with the digital signal processing module and the modulation and demodulation module, and the digital signal processing module is respectively connected with the frequency mixing module and the filtering module;

the digital signal processing module is used for sending the frequency configuration information to the frequency mixing module and sending the bandwidth configuration information to the filtering module;

the frequency mixing module is used for receiving the frequency configuration information and adjusting the frequency of the interference signal corresponding to the carrier frequency of the frequency mixing module according to the frequency configuration information so that the center frequency of the output signal of the frequency mixing module corresponds to the frequency of the interference signal;

In one possible example, the mixing module includes a local oscillator, a co-component multiplier, and a quadrature component multiplier, the filtering module includes a co-component filter and a quadrature component filter, and the analog-to-digital conversion module includes a co-component analog-to-digital converter and a quadrature component analog-to-digital converter;

the local oscillator is respectively connected with the same-direction component multiplier, the orthogonal component multiplier and the digital signal processing module, the low noise amplifying module is respectively connected with the homodyne component multiplier and the orthogonal component multiplier, the same-direction component multiplier is connected with the same-direction component filter, the same-direction component filter is connected with the same-direction component analog-to-digital converter, the quadrature component multiplier is connected with the quadrature component filter, the quadrature component filter is connected with the quadrature component analog-to-digital converter, the cocurrent component analog-to-digital converter and the orthogonal component analog-to-digital converter are respectively connected with the digital signal processing module, the cocurrent component analog-to-digital converter and the orthogonal component analog-to-digital converter are respectively connected with the modulation and demodulation module, the digital signal processing module is respectively connected with the homodromous component filter and the orthogonal component filter;

In one possible example, the mixing module comprises a multiplier and a local oscillator, the filtering module comprises a filter, and the analog-to-digital conversion module comprises an analog-to-digital converter;

the local oscillator is connected with the multiplier, the low-noise amplification module is connected with the multiplier, the multiplier is connected with the filter, the filter is connected with the analog-to-digital converter, the analog-to-digital converter is respectively connected with the digital signal processing module and the modulation and demodulation module, and the digital signal processing module is connected with the local oscillator;

the local oscillator is configured to receive the frequency configuration information, adjust a frequency of the carrier frequency of the local oscillator corresponding to the frequency of the interference signal according to the frequency configuration information, and the multiplier is configured to output a mixing signal whose center frequency corresponds to the frequency of the interference signal;

In one possible example, the interference signal comprises a transmission signal of a far-field communication module.

In one possible example, the far-field communication module comprises any one of: cellular communication module, wireless high fidelity Wi-Fi communication module.

In the case of using an integrated unit, a schematic structural diagram of another near field communication device provided in the embodiment of the present application is shown in fig. 6. In fig. 6, the near field communication device 6 includes: a processing module 60 and a communication module 61. The processing module 60 is used for controlling and managing the actions of the near field communication device, such as the steps performed by the transmission unit 30, the input processing unit 31, the interference identification unit 32, the configuration update unit 33, the modem unit 34, and/or other processes for performing the techniques described herein. The communication module 61 is used to support the interaction between the near field communication device and other devices. As shown in fig. 6, the near field communication device may further comprise a storage module 62, the storage module 62 being adapted to store program codes and data of the near field communication device.

The Processing module 60 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, and the like. The communication module 61 may be a transceiver, an RF circuit or a communication interface, etc. The storage module 62 may be a memory.

All relevant contents of each scene related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. Both the near field communication means 5 and the near field communication means 6 may perform the steps performed by the electronic device in the near field communication method shown in fig. 4.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. The procedures or functions described in accordance with the embodiments of the present application are produced in whole or in part when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

Embodiments of the present application further provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, the computer program enables a computer to execute part or all of the steps of any one of the methods as described in the above method embodiments, and the computer includes an electronic device.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising an electronic device.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and system may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative; for example, the division of the unit is only a logic function division, and there may be another division manner in actual implementation; for example, various elements or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately and physically included, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications can be easily made by those skilled in the art without departing from the spirit and scope of the present invention, and it is within the scope of the present invention to include different functions, combination of implementation steps, software and hardware implementations.

Claims

1. A near field communication module, comprising:

an antenna for transmitting communication signals;

2. The near field communication module of claim 1, wherein the input processing module comprises a low noise amplification module, a mixing module, a filtering module, and an analog-to-digital conversion module;

3. The nfc module of claim 2, wherein the low-noise amplification module includes a low-noise amplifier, and the low-noise amplifier is connected to the antenna and configured to perform low-noise amplification processing on the communication signal.

4. The NFC module of claim 2 or 3, wherein the mixing module comprises a local oscillator, a co-component multiplier and a quadrature component multiplier, wherein the filtering module comprises a co-component filter and a quadrature component filter, and wherein the analog-to-digital conversion module comprises a co-component analog-to-digital converter and a quadrature component analog-to-digital converter;

the local oscillator is respectively connected with the same-direction component multiplier, the orthogonal component multiplier and the digital signal processing module, the low noise amplification module is respectively connected with the homodromous component multiplier and the orthogonal component multiplier, the homodromous component multiplier is connected with the homodromous component filter, the homodromous component filter is connected with the homodromous component analog-to-digital converter, the quadrature component multiplier is connected to the quadrature component filter, the quadrature component filter is connected to the quadrature component analog-to-digital converter, the cocurrent component analog-to-digital converter and the orthogonal component analog-to-digital converter are respectively connected with the digital signal processing module, the cocurrent component analog-to-digital converter and the orthogonal component analog-to-digital converter are respectively connected with the modulation and demodulation module, the digital signal processing module is respectively connected with the homodromous component filter and the orthogonal component filter;

the local oscillator is configured to receive the frequency configuration information, and adjust a frequency of a carrier frequency of the local oscillator corresponding to the frequency of the interference signal according to the frequency configuration information, the cocurrent component multiplier is configured to output a cocurrent component mixed signal whose center frequency corresponds to the frequency of the interference signal, and the orthogonal component multiplier is configured to output an orthogonal component mixed signal whose center frequency corresponds to the frequency of the interference signal;

the same-direction component filter is used for receiving the bandwidth configuration information and filtering the same-direction component mixing signal to filter the same-direction component of the interference signal; the orthogonal component filter is used for receiving the bandwidth configuration information and filtering the orthogonal component mixing signal to filter the orthogonal component of the interference signal.

5. The near field communication module of claim 2 or 3, wherein the mixing module comprises a multiplier and a local oscillator, the filtering module comprises a filter, and the analog-to-digital conversion module comprises an analog-to-digital converter;

6. The near field communication module of any of claims 1-5, wherein the digital signal processing module comprises a digital signal processor and the modem module comprises a modem.

7. The near field communication module of any of claims 1-6, wherein the near field communication module comprises an ultra-wideband UWB communication module.

8. The near field communication module of any of claims 1-7, wherein the interference signal comprises a transmission signal of a far field communication module.

9. The near field communication module of claim 8, wherein the far field communication module comprises any one of:

cellular communication module, wireless high-fidelity Wi-Fi communication module.

10. An electronic device, comprising a near field communication module and a far field communication module;

the near field communication module includes:

an antenna for transmitting communication signals;

11. The near field communication method is applied to electronic equipment, wherein the electronic equipment comprises a near field communication module and a far field communication module, and the near field communication module comprises an antenna, an input processing module, a digital signal processing module and a modulation and demodulation module;

the method comprises the following steps:

transmitting a communication signal through the antenna;