CN109218006B

CN109218006B - Method and device for eliminating full-duplex self-interference and computer readable storage medium

Info

Publication number: CN109218006B
Application number: CN201710523492.6A
Authority: CN
Inventors: 陈朝喜
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2021-04-20
Anticipated expiration: 2037-06-30
Also published as: CN109218006A

Abstract

The disclosure relates to a method and a device for eliminating full-duplex self-interference, and a computer-readable storage medium, wherein the method may include: obtaining a corresponding interference elimination signal according to a signal to be transmitted, wherein the phase of the interference elimination signal is opposite to that of the signal to be transmitted; when the transmitter sends the signal to be transmitted, the interference elimination signal is superposed with a self-interference signal which is received by the receiver and corresponds to the signal to be transmitted, so that at least part of the self-interference signal is offset. By the technical scheme, the transmission and the reception can be carried out in the same frequency channel and the same time slot, so that the data transmission efficiency is improved; meanwhile, the occupation of frequency channel resources can be reduced.

Description

Method and device for eliminating full-duplex self-interference and computer readable storage medium

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to a method and an apparatus for eliminating full-duplex self-interference, and a computer-readable storage medium.

Background

Full-duplex communication is also called bidirectional simultaneous communication, i.e. a data interaction mode in which two communicating parties can simultaneously send and receive data. The wireless full duplex proposed in the related art is divided into time division duplex and frequency division duplex. In time division duplex, receiving and transmitting are under different time slots of the same frequency channel so as to prevent the transmitting signal from causing interference to the receiving signal; in frequency division duplexing, two symmetric frequency channels are used separately to prevent interference of the transmitted signal with the received signal.

Disclosure of Invention

The present disclosure provides a method and an apparatus for eliminating full-duplex self-interference, and a computer-readable storage medium, to solve the deficiencies in the related art.

According to a first aspect of the embodiments of the present disclosure, a method for eliminating full-duplex self-interference is provided, which is applied to an electronic device, where the electronic device includes a transmitter and a receiver, and the transmitter and the receiver use the same frequency channel; the method comprises the following steps:

obtaining a corresponding interference elimination signal according to a signal to be transmitted, wherein the phase of the interference elimination signal is opposite to that of the signal to be transmitted;

when the transmitter sends the signal to be transmitted, the interference elimination signal is superposed with a self-interference signal which is received by the receiver and corresponds to the signal to be transmitted, so that at least part of the self-interference signal is offset.

Optionally, the obtaining a corresponding interference cancellation signal according to a signal to be transmitted includes:

and converting the signal to be transmitted through a balance-unbalance converter to obtain the interference elimination signal.

Optionally, the method further includes:

attenuating the interference cancellation signal to obtain an attenuated signal;

and superposing the attenuation signal and the self-interference signal to at least offset part of the self-interference signal.

Optionally, the attenuating the interference cancellation signal to obtain an attenuated signal includes:

and attenuating the interference cancellation signal according to a static attenuation weight to obtain an attenuated signal.

attenuating the interference cancellation signal according to the dynamic attenuation weight to obtain an attenuation signal;

wherein the dynamic decay weight is obtained by:

taking the minimum attenuation weight in a preset attenuation weight range as a first attenuation weight, and determining a first parameter value of an attenuation signal corresponding to the first attenuation weight; taking the maximum attenuation weight in the preset attenuation weight range as a second attenuation weight, and determining a second parameter value of the attenuation signal corresponding to the second attenuation weight;

determining a test superposition signal obtained by superposing a self-interference signal and an attenuation signal corresponding to the intermediate value between the first attenuation weight and the second attenuation weight; wherein when the parameter value of the trial superposition signal is between a third parameter value and the second parameter value of a preset superposition signal, the intermediate value is updated to the second attenuation weight; updating the intermediate value to the first attenuation weight when the parameter value of the tentative superimposed signal lies between the first parameter value and the third parameter value; determining the intermediate value as the dynamic attenuation weight when the parameter value of the trial superposition signal is equal to the third parameter value.

According to a second aspect of the embodiments of the present disclosure, there is provided a full-duplex self-interference cancellation apparatus applied to an electronic device, the electronic device including a transmitter and a receiver, the transmitter and the receiver using the same frequency channel; the device comprises:

the device comprises an acquisition unit, a receiving unit and a transmitting unit, wherein the acquisition unit is used for acquiring a corresponding interference elimination signal according to a signal to be transmitted, and the phase of the interference elimination signal is opposite to that of the signal to be transmitted;

and the first superposition unit is used for superposing the interference elimination signal and a self-interference signal which is received by the receiver and corresponds to the signal to be transmitted when the signal to be transmitted is transmitted by the transmitter so as to at least offset part of the self-interference signal.

Optionally, the obtaining unit includes:

and the conversion subunit is used for converting the signal to be transmitted through the balun so as to obtain the interference elimination signal.

Optionally, the method further includes:

an attenuation unit configured to attenuate the interference cancellation signal to obtain an attenuated signal;

and the second superposition unit is used for superposing the attenuation signal and the self-interference signal so as to at least offset part of the self-interference signal.

Optionally, the attenuation unit includes:

and the first attenuation subunit is used for attenuating the interference elimination signal according to the static attenuation weight to obtain an attenuation signal.

Optionally, the attenuation unit includes:

the second attenuation subunit is used for attenuating the interference elimination signal according to the dynamic attenuation weight to obtain an attenuation signal;

wherein the dynamic decay weight is obtained by:

According to a third aspect of embodiments of the present disclosure, there is provided a full-duplex self-interference cancellation device, the device comprising a transmitter and a receiver, the transmitter and the receiver using a same frequency channel; the device further comprises:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to implement the steps of the method according to any of the above embodiments.

According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method as described in any one of the above embodiments.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

as can be seen from the foregoing embodiments, in the present disclosure, an interference cancellation signal with a phase opposite to that of a signal to be transmitted is obtained by transforming the signal to be transmitted, and the interference cancellation signal is superimposed on a self-interference signal generated by the signal to be transmitted, so that at least a part of the self-interference signal can be cancelled, and thus, transmission and reception can be performed in the same frequency channel and the same time slot, and the efficiency of data transmission is improved; meanwhile, the occupation of frequency channel resources can be reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a flow chart illustrating a method for full-duplex self-interference cancellation according to an example embodiment.

Fig. 2 is a schematic diagram illustrating a self-interference signal superimposed with an interference cancellation signal in accordance with an example embodiment.

Fig. 3 is a flow chart illustrating another method for full duplex self-interference cancellation according to an example embodiment.

Fig. 4 is a schematic diagram illustrating a transmitter emitting a signal to be transmitted in accordance with an exemplary embodiment.

FIG. 5 is a diagram illustrating determination of dynamic decay weights in accordance with an exemplary embodiment.

Fig. 6 is a block diagram illustrating an apparatus for full-duplex self-interference cancellation according to an example embodiment.

Fig. 7 is a block diagram illustrating another apparatus for full-duplex self-interference cancellation, according to an example embodiment.

Fig. 8 is a block diagram illustrating another apparatus for full-duplex self-interference cancellation, according to an example embodiment.

Fig. 9 is a block diagram illustrating another apparatus for full-duplex self-interference cancellation, according to an example embodiment.

Fig. 10 is a block diagram illustrating another apparatus for full-duplex self-interference cancellation, according to an example embodiment.

Fig. 11 is a schematic structural diagram illustrating an apparatus for canceling full-duplex self-interference according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

Fig. 1 is a flowchart illustrating a method for eliminating full-duplex self-interference according to an exemplary embodiment, where the method is applied to an electronic device, as shown in fig. 1, and may include the following steps:

in step 102, a corresponding interference cancellation signal is obtained according to the signal to be transmitted.

In this embodiment, the phase of the interference cancellation signal is opposite to that of the signal to be transmitted, and the interference cancellation signal may be obtained by converting the signal to be transmitted through a balun (balun). After being converted by balun, the signal to be transmitted is divided into a transmission signal and an interference elimination signal (the phase difference is 180 degrees). The power ratio between the two parts of the transmission signal and the interference cancellation signal can be flexibly set according to actual situations, for example, the power of the two parts is equal or the transmission signal accounts for 99%, and the disclosure does not limit this. The transmitting signal is radiated to the external environment through the transmitter for transmitting data, and a part of the transmitting signal is received by the receiver to form a self-interference signal (the phase is the same as that of the transmitting signal); the interference cancellation signal (180 degrees out of phase with the transmitted signal) is then used to cancel at least part of the self-interference signal. As shown in fig. 2, the self-interference signal and the interference cancellation signal have a phase difference of 180 degrees, and the self-interference signal and the interference cancellation signal can achieve a mutual cancellation effect after being superimposed (such as the superimposed signal in fig. 2), so that the self-interference signal generated by at least part of the transmission signal can be cancelled.

In step 104, when the transmitter transmits the signal to be transmitted, the interference cancellation signal is superimposed with a self-interference signal corresponding to the signal to be transmitted, which is received by the receiver, so as to cancel at least part of the self-interference signal.

In this embodiment, based on the obtained interference cancellation signal, a further attenuation operation may be performed on the obtained interference cancellation signal to improve the effect of cancelling the self-interference signal. For example, the interference cancellation signal is attenuated to obtain an attenuated signal; and superposing the attenuation signal and the self-interference signal to at least offset part of the self-interference signal.

For the attenuation weight, the interference cancellation signal may be attenuated according to a static attenuation weight to obtain an attenuation signal, or the interference cancellation signal may be attenuated according to a dynamic attenuation weight to obtain an attenuation signal.

Wherein the static attenuation weight is a pre-configured fixed numerical value. The dynamic decay weight may be obtained by: taking the minimum attenuation weight in a preset attenuation weight range as a first attenuation weight, and determining a first parameter value of an attenuation signal corresponding to the first attenuation weight; taking the maximum attenuation weight in the preset attenuation weight range as a second attenuation weight, and determining a second parameter value of the attenuation signal corresponding to the second attenuation weight; determining a test superposition signal obtained by superposing a self-interference signal and an attenuation signal corresponding to the intermediate value between the first attenuation weight and the second attenuation weight; wherein when the parameter value of the trial superposition signal is between a third parameter value and the second parameter value of a preset superposition signal, the intermediate value is updated to the second attenuation weight; updating the intermediate value to the first attenuation weight when the parameter value of the tentative superimposed signal lies between the first parameter value and the third parameter value; determining the intermediate value as the dynamic attenuation weight when the parameter value of the trial superposition signal is equal to the third parameter value. The dynamic attenuation weight is obtained in the above mode, and compared with traversing all the attenuation weights in the preset attenuation weight range, the efficiency of obtaining the dynamic attenuation weight with the best cancellation effect can be greatly improved, and the occupation of processing resources of the electronic equipment is reduced.

For the convenience of understanding, the technical scheme of the disclosure is further explained in the following with reference to the attached drawings. Referring to fig. 3, fig. 3 is a flowchart illustrating another method for eliminating full-duplex self-interference according to an exemplary embodiment, where as shown in fig. 3, the method applied in an electronic device may include the following steps:

in step 302, a corresponding interference cancellation signal is obtained according to the signal to be transmitted.

In this embodiment, the interference cancellation signal may be obtained by converting a signal to be transmitted through a balun (balun). After being converted by balun, the signal to be transmitted is divided into a transmission signal and an interference elimination signal (the phase difference is 180 degrees). The power ratio between the two parts of the transmission signal and the interference cancellation signal can be flexibly set according to actual situations, for example, the power of the two parts is equal or the transmission signal accounts for 99%, and the disclosure does not limit this. The transmitting signal is radiated to the external environment through the transmitter for transmitting data, and a part of the transmitting signal is received by the receiver to form a self-interference signal (the phase is the same as that of the transmitting signal); the interference cancellation signal (180 degrees out of phase with the transmitted signal) is then used to cancel at least part of the self-interference signal.

In step 304, the interference cancellation signal is attenuated to obtain an attenuated signal.

In this embodiment, based on the obtained interference cancellation signal, a further attenuation operation may be performed on the obtained interference cancellation signal to improve the effect of cancelling the self-interference signal. As shown in fig. 4, a signal to be transmitted is divided into a transmission signal and an interference cancellation signal by a balun. A portion of the transmitted signal may be received by the receiver to form a self-interference signal. The interference elimination signal enters an attenuator to perform power attenuation (attenuation weight is controlled by a processor) to obtain an attenuation signal, the self-interference signal and the attenuation signal received by the receiver are superposed in the combiner to form a superposed signal, and the detector converts the signal power of the superposed signal into a parameter value (such as a voltage signal) and transmits the parameter value to the processor. The processor may attenuate the interference cancellation signal according to a static attenuation weight (i.e., a fixed attenuation weight) to obtain an attenuated signal, or may attenuate the interference cancellation signal according to a dynamic attenuation weight to obtain an attenuated signal. Wherein the dynamic decay weight may be obtained by: taking the minimum attenuation weight in a preset attenuation weight range as a first attenuation weight, and determining a first parameter value of an attenuation signal corresponding to the first attenuation weight; taking the maximum attenuation weight in the preset attenuation weight range as a second attenuation weight, and determining a second parameter value of the attenuation signal corresponding to the second attenuation weight; determining a test superposition signal obtained by superposing a self-interference signal and an attenuation signal corresponding to the intermediate value between the first attenuation weight and the second attenuation weight; wherein, when the parameter value of the test superimposed signal is between a third parameter value (which can be customized by a user, for example, the parameter value of the return signal corresponding to the transmission signal can be selected) and the second parameter value of the preset superimposed signal, the intermediate value is updated to be a second attenuation weight; when the parameter value of the test superposition signal is between the first parameter value and the third parameter value, updating the intermediate value to be a first attenuation weight; when the parameter value of the trial superimposed signal is equal to the third parameter value, the intermediate value is determined as the dynamic attenuation weight. The dynamic attenuation weight is obtained in the above mode, and compared with traversing all the attenuation weights in the preset attenuation weight range, the efficiency of obtaining the dynamic attenuation weight with the best cancellation effect can be greatly improved, and the occupation of processing resources of the electronic equipment is reduced.

For example, in one embodiment, the processor may attenuate the interference cancellation signal according to a pre-configured static attenuation weight (which may be user-defined). In another embodiment, as shown in FIG. 5: assuming that the attenuation weight is inversely related to the parameter value of the superimposed signal; the preset attenuation weight range is x1-x4, and the corresponding parameter values are y1-y 4; the superimposed signal is preset to point c (x3, y3), i.e. the third parameter value is y 3. Then, a tentative superimposed signal obtained by superimposing the self-interference signal and the attenuation signal corresponding to the intermediate value x2 between the first attenuation weight x1 and the second attenuation weight x4 is b (x2, y 2). Since the parameter value y2 of the current trial superposition signal lies between the first parameter value y1 and the third parameter value y3, the intermediate value x2 is updated to the first attenuation weight (see in detail in the lower coordinate system of fig. 5). At this time, the updated first attenuation weight is x2, the second attenuation weight is x4, and the new pilot superimposed signal is e (x5, y 5). The above-described manner of obtaining the dynamic attenuation weight is performed in a loop until, when the parameter value of the trial superposition signal is equal to the third parameter value y3, the intermediate value between the first attenuation weight and the second attenuation weight at that time is determined as the dynamic attenuation weight, i.e., x 3. When the attenuation weight is in positive correlation with the parameter value of the superimposed signal, the manner of obtaining the dynamic attenuation weight is similar to that described above, and details thereof are not repeated herein.

In this embodiment, based on the determined dynamic attenuation weight, the processor may then directly attenuate the interference cancellation signal according to the dynamic attenuation weight.

In step 306, the attenuation signal is superimposed with the self-interference signal to at least cancel part of the self-interference signal.

Corresponding to the foregoing embodiments of the method for eliminating full-duplex self-interference, the present disclosure also provides embodiments of an apparatus for eliminating full-duplex self-interference.

Fig. 6 is a block diagram illustrating an apparatus for full-duplex self-interference cancellation according to an example embodiment. Referring to fig. 6, the apparatus includes an acquisition unit 61 and a first superimposing unit 62.

The obtaining unit 61 is configured to obtain a corresponding interference cancellation signal according to a signal to be transmitted, where the phase of the interference cancellation signal is opposite to that of the signal to be transmitted;

the first superimposing unit 62 is configured to superimpose the interference cancellation signal with a self-interference signal corresponding to the signal to be transmitted, which is received by the receiver, when the signal to be transmitted is transmitted by the transmitter, so as to cancel at least part of the self-interference signal.

As shown in fig. 7, fig. 7 is a block diagram of another apparatus for eliminating full-duplex self-interference according to an exemplary embodiment, where on the basis of the foregoing embodiment shown in fig. 6, the obtaining unit 61 may include: a transform subunit 611.

The transforming subunit 611 is configured to transform the signal to be transmitted by a balun to obtain the interference cancellation signal.

As shown in fig. 8, fig. 8 is a block diagram of another apparatus for eliminating full-duplex self-interference according to an exemplary embodiment, where the embodiment may further include, on the basis of the foregoing embodiment shown in fig. 6: an attenuation unit 63 and a second superimposing unit 64.

The attenuation unit 63 is configured to attenuate the interference cancellation signal to obtain an attenuated signal;

the second superimposing unit 64 is configured to superimpose the attenuation signal with the self-interference signal to at least cancel part of the self-interference signal.

It should be noted that the structures of the attenuation unit 63 and the second superimposing unit 64 in the device embodiment shown in fig. 8 may also be included in the device embodiment shown in fig. 7, and the disclosure is not limited thereto.

As shown in fig. 9, fig. 9 is a block diagram of another full-duplex self-interference cancellation apparatus according to an exemplary embodiment, where on the basis of the foregoing embodiment shown in fig. 8, the attenuation unit 63 may include: a first attenuator subunit 631.

The first attenuation subunit 631 is configured to attenuate the interference cancellation signal by static attenuation weights to obtain an attenuated signal.

As shown in fig. 10, fig. 10 is a block diagram of another full-duplex self-interference cancellation apparatus according to an exemplary embodiment, where on the basis of the foregoing embodiment shown in fig. 8, the attenuation unit 63 may include: a second attenuator subunit 632.

The second attenuation subunit 632 is configured to attenuate the interference cancellation signal according to a dynamic attenuation weight to obtain an attenuated signal;

wherein the dynamic decay weight is obtained by:

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and 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 modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.

Accordingly, the present disclosure also provides a device for full-duplex self-interference cancellation, the device comprising a transmitter and a receiver, the transmitter and the receiver using the same frequency channel; the device further comprises: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: obtaining a corresponding interference elimination signal according to a signal to be transmitted, wherein the phase of the interference elimination signal is opposite to that of the signal to be transmitted; when the transmitter sends the signal to be transmitted, the interference elimination signal is superposed with a self-interference signal which is received by the receiver and corresponds to the signal to be transmitted, so that at least part of the self-interference signal is offset.

Accordingly, the present disclosure also provides a terminal comprising a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured for execution by the one or more processors to include instructions for: obtaining a corresponding interference elimination signal according to a signal to be transmitted, wherein the phase of the interference elimination signal is opposite to that of the signal to be transmitted; when the transmitter sends the signal to be transmitted, the interference elimination signal is superposed with a self-interference signal which is received by the receiver and corresponds to the signal to be transmitted, so that at least part of the self-interference signal is offset.

Fig. 11 is a block diagram illustrating an apparatus 1100 for cancellation of full-duplex self-interference according to an example embodiment. For example, the apparatus 1100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 11, apparatus 1100 may include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, and communications component 1116.

The processing component 1102 generally controls the overall operation of the device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 1102 may include one or more processors 1120 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 1102 may include one or more modules that facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.

The memory 1104 is configured to store various types of data to support operations at the apparatus 1100. Examples of such data include instructions for any application or method operating on device 1100, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1104 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

A power component 1106 provides power to the various components of the device 1100. The power components 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 1100.

The multimedia component 1108 includes a screen that provides an output interface between the device 1100 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1108 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 1100 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 1110 is configured to output and/or input audio signals. For example, the audio component 1110 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 1100 is in operating modes, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1104 or transmitted via the communication component 1116. In some embodiments, the audio assembly 1110 further includes a speaker for outputting audio signals.

The I/O interface 1112 provides an interface between the processing component 1102 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 1114 includes one or more sensors for providing various aspects of state assessment for the apparatus 1100. For example, the sensor assembly 1114 may detect an open/closed state of the apparatus 1100, the relative positioning of components, such as a display and keypad of the apparatus 1100, the sensor assembly 1114 may also detect a change in position of the apparatus 1100 or a component of the apparatus 1100, the presence or absence of user contact with the apparatus 1100, orientation or acceleration/deceleration of the apparatus 1100, and a change in temperature of the apparatus 1100. The sensor assembly 1114 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1114 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1114 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1116 is configured to facilitate wired or wireless communication between the apparatus 1100 and other devices. The apparatus 1100 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1116 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 1100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 1104 comprising instructions, executable by the processor 1120 of the apparatus 1100 to perform the method described above is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for eliminating full-duplex self-interference is applied to an electronic device, and the electronic device comprises a transmitter and a receiver, wherein the transmitter and the receiver use the same frequency channel; the method comprises the following steps:

attenuating the interference cancellation signal to obtain an attenuated signal, comprising: attenuating the interference cancellation signal according to the dynamic attenuation weight to obtain an attenuation signal;

when the transmitter sends the signal to be transmitted, the interference cancellation signal is superimposed with a self-interference signal corresponding to the signal to be transmitted, which is received by the receiver, so as to at least cancel part of the self-interference signal, including: superimposing the attenuation signal with the self-interference signal to at least cancel a portion of the self-interference signal;

wherein the dynamic decay weight is obtained by: taking the minimum attenuation weight in a preset attenuation weight range as a first attenuation weight, and determining a first parameter value of an attenuation signal corresponding to the first attenuation weight; taking the maximum attenuation weight in the preset attenuation weight range as a second attenuation weight, and determining a second parameter value of the attenuation signal corresponding to the second attenuation weight; determining a test superposition signal obtained by superposing a self-interference signal and an attenuation signal corresponding to the intermediate value between the first attenuation weight and the second attenuation weight; wherein when the parameter value of the trial superposition signal is between a third parameter value and the second parameter value of a preset superposition signal, the intermediate value is updated to the second attenuation weight; updating the intermediate value to the first attenuation weight when the parameter value of the tentative superimposed signal lies between the first parameter value and the third parameter value; determining the intermediate value as the dynamic attenuation weight when the parameter value of the trial superposition signal is equal to the third parameter value.

2. The method of claim 1, wherein obtaining the corresponding interference cancellation signal according to the signal to be transmitted comprises:

3. The method of claim 1, wherein the attenuating the interference cancellation signal to obtain an attenuated signal comprises:

4. A full-duplex self-interference elimination device is applied to an electronic device, and the electronic device comprises a transmitter and a receiver, wherein the transmitter and the receiver use the same frequency channel; the device comprises:

an attenuation unit configured to attenuate the interference cancellation signal to obtain an attenuated signal, including: attenuating the interference cancellation signal according to the dynamic attenuation weight to obtain an attenuation signal;

the first superimposing unit, when the transmitter transmits the signal to be transmitted, superimposes the interference cancellation signal with a self-interference signal corresponding to the signal to be transmitted, which is received by the receiver, so as to at least cancel part of the self-interference signal, and the first superimposing unit includes: superimposing the attenuation signal with the self-interference signal to at least cancel a portion of the self-interference signal;

5. The apparatus of claim 4, wherein the obtaining unit comprises:

6. The apparatus of claim 4, wherein the attenuation unit comprises:

7. An apparatus for full duplex self-interference cancellation, the apparatus comprising a transmitter and a receiver, the transmitter and the receiver using a same frequency channel; the device further comprises:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to implement the steps of the method according to any one of claims 1-3.

8. A computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, carry out the steps of the method according to any one of claims 1-3.