CN118174817A - Interference processing method and device, communication equipment, chip, storage medium - Google Patents

Abstract

The embodiment of the present application provides an interference processing method, comprising: obtaining a first frequency domain position of a single-tone interference signal on a working frequency band; determining a frequency domain unit whose frequency domain position is adjacent to the first frequency domain position on the working frequency band and whose interval with the first frequency domain position is less than a first threshold as a candidate frequency domain unit, and the candidate frequency domain unit is used to eliminate interference of an input signal. The embodiment of the present application also provides an interference processing device, a communication device, and a computer storage medium.

Description

Interference processing method and device, communication equipment, chip, storage medium

Technical Field

The present application relates to the field of electronic technology, and in particular to an interference processing method and device, communication equipment, chip, and storage medium.

Background technique

As the number of frequency bands supported by RFIC (Radio Frequency Integrated Circuit, RFIC) increases, in order to ensure the communication performance of the device, the number of local oscillators (Local Oscillator, LO) also needs to increase with the increase of frequency bands supported by RFIC. Carrier aggregation technology can bring higher data rates, but it usually requires multiple LOs to work simultaneously. The characteristics of the device itself determine that when multiple LOs work simultaneously, they will cross-modulate each other to produce harmonic leakage, thereby introducing single-tone interference signals with harmonic components in the frequency band.

The destructive single-tone interference signal will seriously damage the quality of the original signal, and at the same time affect the accuracy of the digital signal processing algorithm, increase the system processing threshold, and seriously affect the signal reception under the condition of low signal-to-noise ratio. Therefore, it is necessary to process the single-tone interference signal to enhance the system performance.

Summary of the invention

Embodiments of the present application provide an interference processing method and apparatus, a communication device, a chip, and a storage medium.

The technical solution of this application is implemented as follows:

In a first aspect, an embodiment of the present application provides an interference processing method, including:

Obtaining a first frequency domain position of a single-tone interference signal in a working frequency band;

Among the frequency domain units adjacent to the first frequency domain position on the working frequency band, a frequency domain unit whose frequency domain position is spaced from the first frequency domain position by less than a first threshold is determined as a candidate frequency domain unit, and the candidate frequency domain unit is used for eliminating interference of an input signal.

In a second aspect, an embodiment of the present application provides an interference processing device, including:

An acquisition unit is configured to acquire a first frequency domain position of a single-tone interference signal on a working frequency band;

A determination unit is configured to determine, among the frequency domain units adjacent to the first frequency domain position on the working frequency band, a frequency domain unit whose interval with the first frequency domain position is less than a first threshold, as a candidate frequency domain unit, wherein the candidate frequency domain unit is used for eliminating interference of an input signal.

In a third aspect, a communication device is provided, comprising: a processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method described in the first aspect.

In a fourth aspect, a chip is provided, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method described in the first aspect.

According to a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps in the method described in the first aspect are implemented.

An embodiment of the present application provides an interference processing method, wherein a communication device can obtain a first frequency domain position of a single-tone interference signal on a working frequency band, and then, in a frequency domain unit adjacent to the first frequency domain position on the working frequency band, a frequency domain unit whose interval between the frequency domain position and the first frequency domain position is less than a first threshold value is determined as a candidate frequency domain unit, and the candidate frequency domain unit is used to eliminate interference of an input signal. It can be seen that the communication device can use a frequency domain unit that is close to the single-tone interference signal as a frequency domain unit that needs interference elimination based on the frequency domain position of the single-tone interference signal. In this way, the frequency domain unit to be subjected to interference elimination can be distinguished according to the position of the single-tone interference signal, so as to avoid eliminating signals on important frequency domain units, resulting in the problem of user data loss, and reduce the impact of the single-tone interference signal on the data throughput.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a frequency domain position of an exemplary single-tone interference signal provided in an embodiment of the present application;

FIG2 is a flow chart of an interference processing method provided in an embodiment of the present application;

FIG3 is a second schematic diagram of a frequency domain position of an exemplary single-tone interference signal provided in an embodiment of the present application;

FIG4 is a schematic diagram of a flow chart of a method for determining candidate frequency domain units provided in an embodiment of the present application;

FIG5A is a second flow chart of an interference processing method provided in an embodiment of the present application;

FIG5B is a third flow chart of an interference processing method provided in an embodiment of the present application;

FIG6 is a schematic diagram of a state machine switching provided in an embodiment of the present application;

FIG7 is a schematic diagram of a spectrum of a single-tone interference signal and a data signal provided in an embodiment of the present application;

FIG8 is a schematic diagram of the structure of an interference processing device provided in an embodiment of the present application;

FIG9 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a chip provided in an embodiment of the present application.

Detailed ways

The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application.

It should be understood that the single-tone interference signal may appear at any position in the frequency band. Fig. 1 exemplarily shows the position and size at which the single-tone interference signal may be located in the frequency band. Since user data can be transmitted by resource element (RE), the single-tone interference signal can interfere with the transmission of user data to a certain extent. It is necessary to combine the impact on the whole system and the computational complexity assessment for the four types of single-tone interference in Fig. 1. Exemplary, the RE signal quality can be seriously damaged for the single-tone interference signal with stronger destructiveness (such as the single-tone interference signal corresponding to 2 and 3 in Fig. 1).

In practical applications, the communication equipment may not process the single-tone interference signal and tolerate the quality loss caused by the single-tone interference signal. In this case, it is necessary to improve the dynamic range of the entire communication system in the communication equipment, and the design requirements of the communication system are relatively high. In addition, the communication equipment can also rely on the design of the RFIC itself and select an analog-to-digital converter (ADC) with a high sampling rate, so that the harmonic components generated when the LO works can avoid the frequency band range of the communication system, thereby avoiding the impact of the single-tone interference signal on the user data. However, the high-sampling-rate ADC will increase the power consumption of the equipment and pose certain challenges to the bandwidth of the communication system. In addition, the communication equipment can zero the RE on both sides of the single-tone interference signal according to the position of the single-tone interference signal in the frequency domain. This processing method may zero the more important signals in the user data, affecting the maximum data throughput to a certain extent.

Based on this, an embodiment of the present application provides an interference processing method, which can be applied to a communication device. Wherein, the communication device may refer to an access terminal, a user equipment (User Equipment, UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (Wireless Local Loop, WLL) station, a Personal Digital Assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5th generation mobile communication network or a terminal device in a future evolution network, etc.

Among them, the communication device can obtain the first frequency domain position of the single-tone interference signal on the working frequency band, and then determine the frequency domain unit whose interval between the frequency domain position and the first frequency domain position is less than the first threshold in the frequency domain unit adjacent to the first frequency domain position on the working frequency band as a candidate frequency domain unit, and the candidate frequency domain unit is used to eliminate interference of the input signal. It can be seen that the communication device can use the frequency domain unit that is close to the single-tone interference signal as the frequency domain unit that needs interference elimination based on the frequency domain position of the single-tone interference signal. In this way, the frequency domain unit to be interfered with can be distinguished according to the position of the single-tone interference signal, so as to avoid eliminating the signal on the important frequency domain unit, resulting in the problem of user data loss, and reduce the impact of the single-tone interference signal on the data throughput.

To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

Referring to FIG. 2 , the interference processing method provided in the embodiment of the present application may include the following steps:

Step 210: Obtain a first frequency domain position of a single-tone interference signal in a working frequency band;

Step 220: determine, among frequency domain units adjacent to the first frequency domain position on the working frequency band, frequency domain units whose interval with the first frequency domain position is less than a first threshold as candidate frequency domain units, and the candidate frequency domain units are used for interference elimination of input signals.

It should be understood that since the single-tone interference signal is generated by cross-modulation when multiple LOs work simultaneously, the single-tone interference signal can be measured before the communication device leaves the factory. In the embodiment of the present application, the relevant information of the single-tone interference signal (including but not limited to the frequency domain position, amplitude value, energy parameter, etc. of the single-tone interference signal) can be stored in the local storage space of the communication device in advance.

It should be noted that the single-tone interference signal may exist in any position on all frequency bands supported by the communication device. Exemplary, the terminal device can maintain a list of single-tone interference signals, in which the position where the single-tone interference signal is located on all frequency bands supported by the communication device can be stored, as well as the service value or energy parameter of the single-tone interference signal. Wherein, the energy parameter of the single-tone interference signal can be determined by calculating the amplitude value of the single-tone interference signal.

In practical applications, a communication device can operate on some of the frequency bands it supports. For example, for a communication device that supports full network access (i.e., supports multiple operator networks), it can operate on a frequency band provided by a certain operator network. Alternatively, for a communication device that supports low-frequency bands and high-frequency bands (such as millimeter wave bands), it can operate on any frequency band.

Optionally, the operating frequency band of the communication device may be related to the currently accessed cell. The communication device may determine the current operating frequency band according to the configuration information of the accessed cell.

In an embodiment of the present application, the communication device can obtain the first frequency domain position of the single-tone interference signal on the current working frequency band. Specifically, the communication device can determine the single-tone interference signal existing on the current working frequency band of the communication device based on the relevant information of the single-tone interference signal stored locally, and obtain the first frequency domain position of the single-tone interference signal.

Optionally, the communication device may read a single-tone interference signal list, search the single-tone interference signal on the current working frequency band of the communication device from the single-tone interference signal list, and obtain a first frequency domain position of the single-tone interference signal on the working frequency band of the communication device.

After obtaining the first frequency domain position of the single-tone interference signal, the communication device can determine, as a candidate frequency domain unit, a frequency domain unit adjacent to the first frequency domain position on its working frequency band, whose interval with the first frequency domain position is less than a first threshold.

It should be understood that the working frequency band of the communication device can be divided into multiple frequency domain units. Among them, one frequency domain unit and one time domain unit can constitute an RE. That is to say, RE can be composed of one frequency domain unit and one time domain unit. The communication device can carry user data on the resource unit on the working frequency band, or use it for channel estimation, phase tracking and other information. Among them, the frequency domain unit can be a subcarrier, or other frequency domain units, and the embodiments of the present application are not limited to this.

It should be noted that the location of the frequency domain unit on the current operating frequency band of the communication device may be specified by the protocol.

Optionally, after obtaining the first frequency domain position of the single-tone interference signal, the communication device can search for a frequency domain unit adjacent to the first frequency domain position from the frequency domain units in the current working frequency band. Exemplarily, as shown in reference figure 3, the communication device can determine that there is a single-tone interference signal in the current working frequency band based on the relevant information of the single-tone interference signal stored locally, and the first frequency domain position of the single-tone interference signal is frequency point F1. The communication device can determine that the frequency domain units adjacent to the single-tone interference signal include the frequency domain unit of RE1, and the frequency domain unit of RE2.

Further, the communication device may determine the distance between the frequency domain unit adjacent to the single-tone interference signal and the first frequency domain position of the single-tone interference signal.

Optionally, the communication device may calculate the absolute value difference between the frequency domain position of the frequency domain unit adjacent to the single-tone interference signal and the first frequency domain position to obtain the distance between the frequency domain unit adjacent to the single-tone interference signal and the first frequency domain position of the single-tone interference signal.

It should be noted that the frequency domain position of the frequency domain unit may be the center frequency point of the frequency domain unit, or the frequency point corresponding to the maximum signal amplitude on the frequency domain unit, and the embodiment of the present application does not impose any limitation on this.

Exemplarily, as shown in FIG3 , the frequency domain position of RE1 is F2, and the frequency domain position of RE2 is F3. The distance between the first frequency domain position F1 of the single-tone interference signal and the frequency domain position F2 of RE1 is |F2-F1|. The distance between the first frequency domain position F1 of the single-tone interference signal and the frequency domain position F3 of RE2 is |F3-F1|.

In the embodiment of the present application, after the communication device determines the distance between the frequency domain unit adjacent to the single-tone interference signal and the first frequency domain position of the single-tone interference signal, the distance can be compared with the first threshold value. If the distance is less than the first threshold value, it means that the current frequency domain unit is greatly affected by the single-tone interference signal. Therefore, the frequency domain unit is determined as the candidate frequency domain unit that needs to be eliminated. If the distance is greater than or equal to the first threshold value, it means that the current frequency domain unit is less affected by the single-tone interference signal, and there is no need to perform interference elimination processing.

Optionally, the first threshold may be specified by a protocol, or may be determined by the communication device according to a preset rule, and this embodiment of the present application does not impose any limitation on this.

Among them, the protocol can specify the specific length of the first threshold, such as 5kHz, 1kHz, etc., and the embodiment of the present application does not limit this.

In addition, the communication device determines according to a preset rule, which can be determined by the communication device according to a preset proportional relationship with the subcarrier spacing. For example, the first threshold can be 1/2 of the subcarrier spacing, or 3/4 of the subcarrier spacing, or other proportions of the subcarrier spacing. The embodiments of the present application do not limit this.

In summary, the communication device can use the frequency domain unit that is closer to the single-tone interference signal as the frequency domain unit that needs interference elimination based on the frequency domain position of the single-tone interference signal. In this way, the frequency domain unit to be eliminated can be distinguished according to the position of the single-tone interference signal, thus avoiding the problem of eliminating the signal on the important frequency domain unit, resulting in user data loss, and reducing the impact of the single-tone interference signal on the data throughput.

In actual applications, there may be multiple single-tone interference signals on the current working frequency band of the communication device, that is, there may be multiple single-tone interference signals on the working frequency band of the communication device.

In some embodiments, the communication device can perform step 210 and step 220 on all single-tone interference signals on the current working frequency band, determine whether the frequency domain unit adjacent to each single-tone interference signal is a candidate frequency domain unit, and obtain a candidate frequency domain unit set. Based on the frequency domain unit set, interference elimination processing of the input signal is implemented.

In other embodiments, the communication device may perform the judgment of step 210 and step 220 on some single-tone interference signals on the current working frequency band. Specifically, the communication device may determine, as a candidate frequency domain unit, a frequency domain unit whose interval between the frequency domain position and the first frequency domain position of each single-tone interference signal is less than a first threshold value in the frequency domain units adjacent to each single-tone interference signal of at least some of the multiple single-tone interference signals, and obtain a set of candidate frequency domain units; each candidate frequency domain unit in the set of candidate frequency domain units is used for interference elimination of the input signal.

It should be understood that the single-tone interference signal is generated by cross-modulation when multiple LOs work simultaneously, and can be measured before the communication device leaves the factory. Therefore, after the communication device leaves the factory, the number of single-tone interference signals it has is determined. In the embodiment of the present application, the number of single-tone interference signals owned by the communication device is denoted as N, which is an integer greater than or equal to 1.

In addition, since the processing resources of the communication device are limited, the maximum number of candidate frequency domain units that the communication device can perform interference elimination on is also determined. In the embodiment of the present application, the maximum number of candidate frequency domain units that the communication device can process can be denoted as M, which is an integer greater than or equal to 1.

Therefore, the communication device can perform the judgments of step 210 and step 220 on the single-tone interference signal on the current frequency band based on N and M, and determine the candidate frequency domain units to obtain a set of candidate frequency domain units.

Optionally, in the above embodiment, the communication device determines, as a candidate frequency domain unit, a frequency domain unit adjacent to each single-tone interference signal of at least part of the single-tone interference signals in the multiple single-tone interference signals, a frequency domain unit whose interval between the frequency domain position and the first frequency domain position of each single-tone interference signal is less than a first threshold, to obtain a set of candidate frequency domain units, which can be implemented in the following manner:

Determine whether an i-th frequency domain unit adjacent to a first frequency domain position of an i-th single-tone interference signal among multiple single-tone interference signals is in the candidate frequency domain unit set;

If the i-th frequency domain unit is not in the candidate frequency domain unit set, and the interval between the frequency domain position of the i-th frequency domain unit and the first frequency domain position of the i-th single-tone interference signal is less than a first threshold, then the i-th frequency domain unit is determined to be a candidate frequency domain unit, and the i-th frequency domain unit is added to the candidate frequency domain unit set;

Continue to determine whether the (i+1)th frequency domain unit adjacent to the first frequency domain position of the (i+1)th single-tone interference signal among the multiple single-tone interference signals is in the candidate frequency domain unit set;

If the i+1th frequency domain unit is not a candidate frequency domain unit, and the interval between the i+1th frequency domain unit and the first frequency domain position of the i+1th single-tone interference signal is less than the first threshold, the i+1th frequency domain unit is determined to be a candidate frequency domain unit, and the i+1th frequency domain unit is added to the candidate frequency domain unit set until the number of candidate frequency domain units in the candidate frequency domain unit set is M, or until it is determined whether the Nth frequency domain unit adjacent to the first frequency domain position of the Nth single-tone interference signal is a candidate frequency domain unit.

Here, i is an integer greater than or equal to 1.

In an embodiment of the present application, the communication device can judge the single-tone interference signals existing in its working frequency band one by one in a certain order, and determine whether the frequency domain units adjacent to the single-tone interference signals are frequency domain units that need to eliminate interference, until the number of judged single-tone interference signals reaches N, or the number of obtained candidate frequency domain units reaches M.

Optionally, the communication device may judge the single-tone interference signals existing in its operating frequency band one by one according to the order of the frequency domain positions of the single-tone interference signals. In addition, the communication device may also judge the single-tone interference signals existing in its operating frequency band one by one according to the order of the first energy parameter of the single-tone interference signal from large to small, and the embodiments of the present application do not limit this.

Among them, the first energy parameter of the single-tone interference signal refers to the signal energy value of the single-tone interference signal. The first energy parameter of the single-tone interference signal may include an amplitude parameter or a power parameter of the single-tone interference signal, which is not limited in the embodiment of the present application.

Exemplarily, the communication device may sort the multiple single-tone interference signals existing in its working frequency band in descending order according to the first energy parameter of each single-tone interference signal. According to this order, the single-tone interference signals are judged one by one. In other words, the first energy parameter of the i-th single-tone interference signal is greater than the first energy parameter of the i+1-th single-tone interference signal.

It should be noted that, as shown in reference figure 3, a single-tone interference signal can affect the signal quality of the left and right two REs in the frequency band. Based on this, when the communication device judges the single-tone interference signal one by one, it can first judge the first frequency domain unit adjacent to the left (or right) of the first frequency domain position of the single-tone interference signal, and judge whether the frequency domain unit is already in the candidate frequency domain unit set. If it is not in the candidate frequency domain unit set, the absolute value of the difference between the frequency domain position of the frequency domain resource and the first frequency domain position of the current single-tone interference signal is calculated to obtain the distance between the two. If the distance is less than the first threshold value, it means that the signal carried on the frequency domain unit is greatly affected by the single-tone interference signal, and the frequency domain unit is added to the candidate frequency domain unit set. Then, the communication device can make the same judgment as above to the first frequency domain unit adjacent to the other side of the current single-tone interference signal.

Exemplarily, referring to FIG4 , the communication device may obtain a candidate frequency domain unit set according to the following steps.

Step 1: Obtain the first frequency domain position of each single-tone interference signal among multiple single-tone interference signals existing in the working frequency band of the communication device, and the absolute amplitude value of each single-tone interference signal (ie, the first energy parameter in the above embodiment).

Step 2: Sort the multiple single-tone interference signals in descending order of their absolute amplitude values.

Step 3: According to the maximum number N of single-tone interference signals possessed by the communication device and the maximum number M of candidate frequency domain units that the communication device can process, determine one by one whether the resource units adjacent to each single-tone interference signal are candidate frequency domain units.

Specifically, step 3 may include the following steps:

Step 3.1: The communication device may determine whether the number (i) of currently processed single-tone interference signals is less than or equal to N, and whether the number of candidate frequency domain units in the candidate frequency domain unit set is less than or equal to M.

If the number of currently processed single-tone interference signals is less than or equal to N, and the number of candidate frequency domain units in the candidate frequency domain unit set is less than or equal to M, step 301 is executed.

Step 3.2, as shown in reference to Figure 3, the communication device can determine the first frequency domain position F1 of the current i-th single-tone interference signal, find the first frequency domain unit F2 on the left closest to F1, and determine whether the frequency domain unit is already in the candidate frequency domain unit set. If so, jump to step 3.3. If not, calculate the absolute value of the difference between F1 and F2, absFreq = |F2-F1|. If absFreq is less than 3/4*subcarrier spacing, it means that the signal on this frequency domain unit will be affected, then add the resource unit F2 to the candidate frequency domain unit set, and add the number of candidate frequency domain units by 1.

Step 3.3, find the first frequency domain unit F3 on the right side closest to F1, and determine whether it is already in the candidate frequency domain unit set. If so, jump to step 3.4. If not, calculate the absolute value of the difference between F1 and F3, absFreq = |F3-F1|. If the absolute value absFreq is less than 3/4*subcarrier spacing, it means that the signal on this frequency domain unit will be affected, then add the resource unit F2 to the candidate frequency domain unit set, and add 1 to the number of candidate frequency domain units.

Step 3.4, add 1 to i, and re-execute step 3.1. When the number of single-tone interference elimination (ie, the value of i) is N or the number of candidate frequency domain units is greater than M, exit the loop. In this way, a set of candidate frequency domain units can be obtained.

In summary, the communication device can use the frequency domain unit that is closer to the single-tone interference signal as the frequency domain unit that needs interference elimination based on the frequency domain position of the single-tone interference signal. In this way, the frequency domain unit to be eliminated can be distinguished according to the position of the single-tone interference signal, thus avoiding the problem of eliminating the signal on the important frequency domain unit, resulting in user data loss, and reducing the impact of the single-tone interference signal on the data throughput.

It should be understood that after the working frequency band of the communication device is determined, it will simultaneously determine whether the frequency domain unit adjacent to the single-tone interference signal is a candidate frequency domain unit. Normally, when the working frequency band of the communication device changes, or the radio frequency module is restarted, it is necessary to re-determine the candidate frequency domain unit based on steps 210 and 220. Specifically, when the current working frequency band of the communication device changes, or the radio frequency module is restarted, the first frequency domain position of the single-tone interference signal on the working frequency band is reacquired, and the frequency domain unit adjacent to the first frequency domain position on the working frequency band, the frequency domain unit whose interval between the frequency domain position and the first frequency domain position is less than the first threshold, is determined as a candidate frequency domain unit.

Optionally, the change in the working frequency band of the communication device includes but is not limited to inter-frequency cell switching, network switching, etc. In the embodiment of the present application, the processing of the above steps 210 and 220 can be understood as a static processing process. The execution of steps 210 and 220 is related to the working frequency band of the communication device and the restart of the radio frequency module.

In the embodiment of the present application, after the communication device determines the candidate frequency domain unit, it can perform interference elimination processing based on the candidate frequency domain unit each time it receives an input signal. This process can be understood as a dynamic processing process. Each time the communication device receives an input signal, it needs to perform interference elimination processing on the input signal based on the candidate frequency domain unit obtained by the above static processing process.

It should be noted that when the communication device determines multiple candidate frequency domain units based on multiple single-tone interference signals on the current working frequency band, that is, when the candidate frequency domain unit set in the above embodiment includes multiple candidate frequency domain units, the communication device can perform interference elimination processing on the input signal based on the multiple candidate frequency domain units.

In a possible implementation, as shown in FIG. 5A , after step 220, the communication device performs interference cancellation processing based on the candidate frequency domain unit, which can be implemented in the following manner:

Step 230: Perform interference cancellation processing on the signal in the candidate frequency domain in the input signal.

The interference elimination process may be to set the signal value on the candidate frequency domain to zero, thereby avoiding the influence of the single-tone interference signal on the entire user data.

In the embodiment of the present application, the communication device can perform zeroing processing on the signal on the RE matching the candidate frequency domain unit in the input signal each time after acquiring the input signal, so as to ensure that the candidate frequency domain unit in the input signal is not interfered.

It should be noted that when the communication device determines multiple candidate frequency domain units according to multiple single-tone interference signals on the current working frequency band, the communication device can perform zeroing processing on the signal on each RE in the input signal that matches the candidate frequency domain unit.

In another possible implementation, as shown in FIG. 5B , after step 220, the communication device performs interference cancellation processing based on the candidate frequency domain unit, which can also be implemented in the following manner:

Step 240, determining a first energy parameter of a single-tone interference signal in a working frequency band;

Step 250, determining a second energy parameter of the input signal in the current time period;

Step 260: Based on the relationship between the difference between the first energy parameter and the second energy parameter and the second threshold, determine whether to perform interference cancellation processing on the signal on the candidate frequency domain unit in the input signal in the next time period.

It should be understood that during dynamic processing, the communication device can measure the energy parameters of the input signal at fixed time periods, and determine whether the candidate frequency domain units obtained in the above static processing process are valid in the next time period based on the energy parameters of the input signal in the current time period.

That is, the communication device can use the energy parameters of the input signal measured in the current time period to predict the strength of the input signal in the next time period, thereby determining whether to set zero processing to the REs matching the candidate frequency domain units on the input signal in the next time period.

If the strength of the input signal in the current time period is relatively large, it means that the input signal is not easily affected by the single-tone interference signal. At this time, the communication device can determine that it is not necessary to perform interference elimination processing on the signal on the candidate frequency domain unit of the input signal in the next time period. If the strength of the input signal is relatively small, it means that the input signal is easily affected by the single-tone interference signal, and the communication device needs to perform interference elimination processing on the signal on the candidate frequency domain unit of the input signal.

In some embodiments, the communication device may calculate a difference between a second energy parameter of the input signal and a first energy parameter of the single-tone interference signal in each time period, and compare the difference with a second threshold.

Optionally, if the difference between the first energy parameter and the second energy parameter is less than the second threshold, indicating that the energy intensity of the input signal in the current time period is slightly different, the communication device can determine that the candidate frequency domain unit (or a set of candidate frequency domain units) determined during the static processing process is invalid, that is, the communication device does not perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal in the next time period.

In addition, if the difference between the first energy parameter and the second energy parameter is greater than the second threshold, it means that the energy intensity of the input signal in the current time period is greatly different. Then the communication device can determine that the candidate frequency domain unit (or a set of candidate frequency domain units) is valid in the next time period, and it is necessary to not perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal.

In the embodiment of the present application, the time period may be a signal transmission time interval (Transmission Time Interval, TTI), or other time lengths specified by the protocol, such as 0.5 milliseconds, 0.8 milliseconds, etc., and the embodiment of the present application does not impose any limitation on this.

Optionally, the second threshold may be determined according to a service scenario of the communication device, wherein the service scenario may include cell search, measurement, data transmission, etc., which is not limited in the embodiment of the present application.

It should be understood that different service scenarios have different tolerances for single-tone interference signals. For a cell search scenario, the second threshold may be set to a higher value. For a data service, the second threshold may be set to a lower value. In this way, the needs of different service scenarios may be met.

In some embodiments, the second energy parameter of the input signal in the current time period may include:

The signal energy parameter of the time domain unit where the reference signal in the input signal is located in the current time period, or the average signal energy parameter of multiple time domain units in the input signal in the current time period.

Optionally, in the LTE system, considering the influence of the single-tone interference signal on the reference signal (such as the cell reference signal CRS), the energy parameter of the time domain unit (such as OFDM symbol, or other types of time domain units) where the reference signal is located can be used as the energy reference of the input signal in the next time period, so as to determine whether to perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal in the next time period. Because the reference signal will be used for channel estimation, this can keep the real reference signal to the greatest extent.

In the NR system, the average energy parameters of all time domain units in the current time period can be used as the energy reference of the input signal in the next time period, so as to determine whether to perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal in the next time period.

Exemplarily, in an LTE system, a communication device can use the signal energy parameter of the time domain unit where the CRS is located in the previous TTI as a reference value for the signal energy parameter in the next TTI. In this scenario, the communication device can calculate the difference Rssi_delta between the energy parameter of each single-tone interference signal and the signal energy parameter on the current time domain symbol. In an NR system, a communication device can use the average signal energy parameter on each time domain unit in the previous TTI as a reference value for the signal energy parameter in the next TTI. In this scenario, the communication device can calculate the difference Rssi_delta between the energy parameter of each single-tone interference signal and the average energy parameter.

In an embodiment of the present application, the second threshold may include a first sub-threshold and a second sub-threshold, and the first sub-threshold is higher than the second sub-threshold.

Accordingly, step 260 determines whether to perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal in the next time period based on the relationship between the difference between the first energy parameter and the second energy parameter and the second threshold, which can be implemented in the following manner:

When the communication device is in a non-interference cancellation state in the current time period, if the difference is greater than or equal to the first sub-threshold, it is determined to switch to the interference cancellation state in the next time period; if the difference is less than the first sub-threshold, it is determined to continue to be in the non-interference cancellation state in the next time period;

When the communication device is in the interference elimination state in the current time period, if the difference is less than or equal to the second sub-threshold, it is determined to switch to the non-interference elimination state in the next time period; if the difference is greater than the second sub-threshold, it is determined to continue to be in the interference elimination state in the next time period;

The interference cancellation state indicates that interference cancellation processing is performed on the signal on the candidate frequency domain unit in the input signal; and the non-interference cancellation state indicates that interference cancellation processing is not performed on the candidate frequency domain unit in the input signal.

It is understandable that the communication device may be provided with an interference cancellation state machine. Referring to FIG6, the interference cancellation state machine includes two states: an interference cancellation state and a non-interference cancellation state. In the interference cancellation state, the communication device may perform interference cancellation processing on the signal on the same candidate frequency domain unit in the input signal according to the candidate frequency domain unit or the candidate frequency domain unit set determined by the above-mentioned static processing process. In the non-interference cancellation state, the communication device may not perform interference cancellation processing on the input signal.

In order to avoid the communication device repeatedly switching between the interference cancellation state and the non-interference cancellation state, the second threshold can be set to include two different sub-thresholds, a first sub-threshold and a second sub-threshold. The first sub-threshold is greater than the second sub-threshold. In the embodiment of the present application, the first sub-threshold can be referred to as the highest threshold value, and the second sub-threshold can be referred to as the lowest threshold value.

Referring to FIG6, when the state machine of the communication device is in the interference elimination state, if the difference between the first energy parameter and the second energy parameter is greater than the minimum threshold value, the current state machine is not switched, so that the communication device continues to perform zeroing operation on the candidate frequency domain unit (or candidate frequency domain unit set) of the input signal in the next time period. If the difference between the first energy parameter and the second energy parameter is less than or equal to the minimum threshold value, the state machine is switched to the non-interference elimination state, so that the communication device does not perform zeroing operation on the candidate frequency domain unit (or candidate frequency domain unit set) of the input signal in the next time period.

When the state machine of the communication device is in the non-interference elimination state, if the difference between the first energy parameter and the second energy parameter is less than the maximum threshold value, the current state machine is not switched, so that the communication device does not perform a zeroing operation on the candidate frequency domain unit (or a set of candidate frequency domain units) of the input signal in the next time period. If the difference between the first energy parameter and the second energy parameter is greater than or equal to the maximum threshold value, the state machine is switched to the interference elimination state, so that the communication device can perform a zeroing operation on the candidate frequency domain unit (or a set of candidate frequency domain units) of the input signal in the next time period.

In an embodiment of the present application, the interference processing method provided in the embodiment of the present application may further include the following steps:

Determine a reference signal in the input signal in which the frequency domain unit has not been subjected to interference cancellation processing, and obtain a target reference signal;

Channel estimation is performed based on the target reference signal.

It should be understood that the reference signal in the input signal has an important influence on the channel estimation. The channel estimation of the communication device needs to be completed based on the reference signal. In the above process, the frequency domain unit where the reference signal in the input signal is located may be subjected to interference cancellation processing.

Based on this, the communication device needs to record the interference processing results of each reference signal in the input signal. In some embodiments, the communication device may only record the reference signal in the input signal that has been subjected to interference cancellation processing. It may also only record the reference signal in the input signal that has not been subjected to interference cancellation processing, and may also record the processing results of each reference signal in the input signal at the same time, which is not limited in the embodiments of the present application.

In this way, when the communication device performs channel estimation, it can perform estimation based on the interference processing results of each reference signal in the input signal. Specifically, for the reference signal that is severely affected by the single-tone interference signal and is subjected to interference cancellation processing, the communication device can skip the reference signal when performing channel estimation. Channel estimation is performed only based on the reference signal that has not been subjected to interference cancellation. In this way, the accuracy of channel estimation can be improved.

Exemplary, with reference to Figure 7, the frequency band of the communication device operation includes three single-tone interference signals. The frequency domain positions of these three single-tone interference signals are [-4.2, 0, 6] (MHz), and the amplitude values are [-60, -70, -50] (dBm). After the above-mentioned static processing and dynamic processing, the signal is obtained, as shown in the parabola in Figure 7.

To summarize, the interference processing method provided in the embodiment of the present application can distinguish the subcarriers that need to be eliminated according to the frequency domain position and energy parameters of the single-tone interference signal. When the RF receiver is in continuous working state, it can dynamically detect the energy parameters of the current useful signal and the energy parameters of the single-tone interference signal, and adjust the subcarriers that need to be eliminated in time. At the same time, for the subcarriers carrying important signals (such as reference signals), the results of interference elimination can be recorded to facilitate special processing of the candidates.

It can be understood that the interference processing method provided in the embodiment of the present application includes two parts. The first part is a static processing process, which determines whether the frequency domain unit where the user data is located is a candidate frequency domain unit that needs to perform interference elimination processing based on the working frequency band of the communication device and the frequency domain position of the single-tone interference signal. The second part is a dynamic processing, which determines whether the statically obtained candidate frequency domain unit is valid based on the candidate frequency domain unit obtained by static processing and the signal energy parameters measured at fixed intervals.

The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further explain various possible combinations. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of the present application, they should also be regarded as the contents disclosed in the present application. For another example, the various embodiments and/or the technical features in the various embodiments described in the present application can be arbitrarily combined with the prior art without conflict, and the technical solution obtained after the combination should also fall within the protection scope of the present application.

Based on the same invention communication as the above embodiments, the present application embodiment further provides an interference processing device. Referring to FIG8 , the interference processing device includes:

An acquiring unit 801 is configured to acquire a first frequency domain position of a single-tone interference signal in a working frequency band;

The determination unit 802 is configured to determine, among the frequency domain units adjacent to the first frequency domain position on the working frequency band, a frequency domain unit whose interval between the frequency domain position and the first frequency domain position is less than a first threshold, as a candidate frequency domain unit, and the candidate frequency domain unit is used to eliminate interference of the input signal.

In some embodiments, the determination unit 802 is further configured to determine, in the frequency domain units adjacent to each single-tone interference signal of at least part of the multiple single-tone interference signals, a frequency domain unit whose frequency domain position is less than the first threshold value from the first frequency domain position of each single-tone interference signal as a candidate frequency domain unit, and obtain a set of candidate frequency domain units;

Each candidate frequency domain unit in the candidate frequency domain unit set is used for interference elimination of the input signal.

In some embodiments, the determining unit 802 is further configured to determine whether the i-th frequency domain unit adjacent to the first frequency domain position of the i-th single-tone interference signal among the multiple single-tone interference signals is in the candidate frequency domain unit set;

If the i-th frequency domain unit is not in the candidate frequency domain unit set, and the interval between the frequency domain position of the i-th frequency domain unit and the first frequency domain position of the i-th single-tone interference signal is less than a first threshold, then determine that the i-th frequency domain unit is a candidate frequency domain unit, and add the i-th frequency domain unit to the candidate frequency domain unit set;

Continue to determine whether the (i+1)th frequency domain unit adjacent to the first frequency domain position of the (i+1)th single-tone interference signal among the multiple single-tone interference signals is in the candidate frequency domain unit set;

If the i+1th frequency domain unit is not a candidate frequency domain unit, and the interval between the i+1th frequency domain unit and the first frequency domain position of the i+1th single-tone interference signal is less than a first threshold, the i+1th frequency domain unit is determined to be a candidate frequency domain unit, and the i+1th frequency domain unit is added to the candidate frequency domain unit set until the number of candidate frequency domain units in the candidate frequency domain unit set is M, or until it is determined whether the Nth frequency domain unit adjacent to the first frequency domain position of the Nth single-tone interference signal is a candidate frequency domain unit, and M is the maximum number of candidate frequency domain units that the communication device can process.

In some embodiments, the first energy parameter of the i-th single-tone interference signal is greater than the first energy parameter of the (i+1)-th single-tone interference signal.

In some embodiments, the acquisition unit 801 is further configured to acquire a first frequency domain position of a single-tone interference signal on the working frequency band when the working frequency band changes or the radio frequency module is restarted.

In some embodiments, the interference processing apparatus further comprises an interference processing unit configured to perform interference cancellation processing on the signal in the candidate frequency domain in the input signal.

In some embodiments, the interference processing unit is also configured to determine a first energy parameter of the single-tone interference signal in the working frequency band; determine a second energy parameter of the input signal in the current time period; and determine whether to perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal in the next time period based on the difference between the first energy parameter and the second energy parameter and the relationship between the second threshold.

In some embodiments, the second threshold includes a first sub-threshold and a second sub-threshold, the first sub-threshold being higher than the second sub-threshold;

The interference processing unit is further configured to, in the case of being in the non-interference elimination state during the current time period, if the difference is greater than or equal to the first sub-threshold, determine to switch to the interference elimination state during the next time period; if the difference is less than the first sub-threshold, determine to continue to be in the non-interference elimination state during the next time period; in the case of being in the interference elimination state during the current time period, if the difference is less than or equal to the second sub-threshold, determine to switch to the non-interference elimination state during the next time period; if the difference is greater than the second sub-threshold, determine to continue to be in the interference elimination state during the next time period;

The interference cancellation state indicates that interference cancellation processing is performed on the signal on the candidate frequency domain unit in the input signal; and the non-interference cancellation state indicates that interference cancellation processing is not performed on the signal on the candidate frequency domain unit in the input signal.

The second threshold is determined based on a service scenario of the communication device, where the service scenario includes one or more of the following: a cell search scenario, a measurement scenario, and a data transmission scenario.

In some embodiments, the second energy parameter includes:

The signal energy parameter of the time domain unit where the reference signal in the input signal is located in the current time period;

or,

The average signal energy parameter of multiple time domain units in the input signal during the current time period.

In some embodiments, the interference processing device also includes a channel estimation unit, which is configured to determine a reference signal in the input signal that has not been subjected to interference cancellation processing by the frequency domain unit to obtain a target reference signal; and perform channel estimation based on the target reference signal.

Those skilled in the art should understand that the relevant description of the above-mentioned interference processing device in the embodiment of the present application can be understood by referring to the relevant description of the interference processing method in the embodiment of the present application.

FIG9 is a schematic structural diagram of a communication device 900 provided in an embodiment of the present application. The communication device can be a terminal device or a network device. The communication device 900 shown in FIG9 includes a processor 910, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in Fig. 9, the communication device 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

The memory 920 may be a separate device independent of the processor 910 , or may be integrated into the processor 910 .

Optionally, as shown in FIG. 9 , the communication device 900 may further include a transceiver 930 , and the processor 910 may control the transceiver 930 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include an antenna, and the number of the antennas may be one or more.

Fig. 10 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1000 shown in Fig. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

Optionally, as shown in FIG10 , the chip 1000 may further include a memory 1020. The processor 1010 may call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device independent of the processor 1010 , or may be integrated into the processor 1010 .

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The present application also provides a computer storage medium, specifically a computer readable storage medium, on which computer instructions are stored, and when the computer storage medium is located in a communication device, the computer instructions are executed by a processor to implement any step of the interference processing method in the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately configured as a unit, or at least two units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

A person of ordinary skill in the art can understand that all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, disks or optical disks.

Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROM, RAM, magnetic disks or optical disks.

It should be noted that the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of 0 changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (15)

1. An interference processing method, characterized by comprising: Obtaining a first frequency domain position of a single-tone interference signal in a working frequency band; Among the frequency domain units adjacent to the first frequency domain position on the working frequency band, a frequency domain unit whose frequency domain position is spaced from the first frequency domain position by less than a first threshold is determined as a candidate frequency domain unit, and the candidate frequency domain unit is used for eliminating interference of an input signal. 2. The method according to claim 1 is characterized in that the number of single-tone interference signals on the working frequency band includes multiple ones; the step of determining, as a candidate frequency domain unit, a frequency domain unit adjacent to the first frequency domain position on the working frequency band and having an interval between the frequency domain position and the first frequency domain position less than a first threshold value, comprising: Determine, in frequency domain units adjacent to each single-tone interference signal of at least part of the multiple single-tone interference signals, a frequency domain unit whose frequency domain position is less than the first threshold value from the first frequency domain position of each single-tone interference signal as a candidate frequency domain unit, and obtain a set of candidate frequency domain units; Each candidate frequency domain unit in the candidate frequency domain unit set is used for interference elimination of the input signal. 3. The method according to claim 2 is characterized in that the frequency domain units adjacent to each single-tone interference signal of at least part of the multiple single-tone interference signals, the frequency domain units whose frequency domain positions are spaced less than the first threshold from the first frequency domain position of each single-tone interference signal, are determined as candidate frequency domain units, and the candidate frequency domain unit set is obtained, comprising: Determine whether an i-th frequency domain unit adjacent to a first frequency domain position of an i-th single-tone interference signal among the multiple single-tone interference signals is in the candidate frequency domain unit set; If the i-th frequency domain unit is not in the candidate frequency domain unit set, and the interval between the frequency domain position of the i-th frequency domain unit and the first frequency domain position of the i-th single-tone interference signal is less than a first threshold, then determine that the i-th frequency domain unit is a candidate frequency domain unit, and add the i-th frequency domain unit to the candidate frequency domain unit set; Continue to determine whether the (i+1)th frequency domain unit adjacent to the first frequency domain position of the (i+1)th single-tone interference signal among the multiple single-tone interference signals is in the candidate frequency domain unit set; If the i+1th frequency domain unit is not a candidate frequency domain unit, and the interval between the i+1th frequency domain unit and the first frequency domain position of the i+1th single-tone interference signal is less than a first threshold, the i+1th frequency domain unit is determined to be a candidate frequency domain unit, and the i+1th frequency domain unit is added to the candidate frequency domain unit set until the number of candidate frequency domain units in the candidate frequency domain unit set is M, or until it is determined whether the Nth frequency domain unit adjacent to the first frequency domain position of the Nth single-tone interference signal is a candidate frequency domain unit, where M is the maximum number of candidate frequency domain units that the communication device can process. 4 . The method according to claim 3 , wherein the first energy parameter of the i-th single-tone interference signal is greater than the first energy parameter of the (i+1)-th single-tone interference signal. 5. The method according to any one of claims 1 to 4 is characterized in that the step of obtaining a first frequency domain position of a single-tone interference signal on a working frequency band, and determining a frequency domain unit whose frequency domain position is adjacent to the first frequency domain position on the working frequency band and whose interval with the first frequency domain position is less than a first threshold as a candidate frequency domain unit, comprises: When the working frequency band changes or the RF module is restarted, the first frequency domain position of the single-tone interference signal on the working frequency band is obtained, and the frequency domain units adjacent to the first frequency domain position on the working frequency band, whose frequency domain positions are spaced less than a first threshold, are determined as candidate frequency domain units. 6. The method according to any one of claims 1 to 5, characterized in that the method further comprises: An interference cancellation process is performed on the signal in the candidate frequency domain in the input signal. 7. The method according to any one of claims 1 to 5, characterized in that the method further comprises: Determining a first energy parameter of the single-tone interference signal in the working frequency band; determining a second energy parameter of the input signal within the current time period; Based on the relationship between the difference between the first energy parameter and the second energy parameter and a second threshold, it is determined whether to perform interference cancellation processing on the signal on the candidate frequency domain unit in the input signal in the next time period. 8. The method according to claim 7, characterized in that the second threshold comprises a first sub-threshold and a second sub-threshold, and the first sub-threshold is higher than the second sub-threshold; The determining whether to perform interference elimination processing on the signal on the candidate frequency domain unit in the input signal in the next time period based on the relationship between the difference between the first energy parameter and the second energy parameter and a second threshold value comprises: In the case of being in the non-interference elimination state in the current time period, if the difference is greater than or equal to the first sub-threshold, determining to switch to the interference elimination state in the next time period; if the difference is less than the first sub-threshold, determining to continue to be in the non-interference elimination state in the next time period; In the case of being in the interference elimination state in the current time period, if the difference is less than or equal to the second sub-threshold, determining to switch to the non-interference elimination state in the next time period; if the difference is greater than the second sub-threshold, determining to continue to be in the interference elimination state in the next time period; The interference cancellation state indicates that interference cancellation processing is performed on the signal on the candidate frequency domain unit in the input signal; and the non-interference cancellation state indicates that interference cancellation processing is not performed on the signal on the candidate frequency domain unit in the input signal. 9. The method according to claim 7 is characterized in that the second threshold is determined based on a business scenario; the business scenario includes one or more of the following: a cell search scenario, a measurement scenario, and a data transmission scenario. 10. The method according to claim 7, characterized in that the second energy parameter comprises: The signal energy parameter of the time domain unit where the reference signal in the input signal is located in the current time period; or, The average signal energy parameter of multiple time domain units in the input signal during the current time period. 11. The method according to any one of claims 6 to 9, characterized in that: Determine a reference signal in the input signal that has not been subjected to interference cancellation processing in the frequency domain unit, and obtain a target reference signal; Channel estimation is performed based on the target reference signal. 12. An interference processing device, comprising: An acquisition unit is configured to acquire a first frequency domain position of a single-tone interference signal on a working frequency band; A determination unit is configured to determine, among the frequency domain units adjacent to the first frequency domain position on the working frequency band, a frequency domain unit whose interval with the first frequency domain position is less than a first threshold, as a candidate frequency domain unit, wherein the candidate frequency domain unit is used for eliminating interference of an input signal. 13. A communication device, comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 11. 14. A chip, characterized in that it comprises: a processor, used to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 11. 15. A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.