CN109150246B

CN109150246B - Method and device for detecting narrow-band interference noise and integrated circuit

Info

Publication number: CN109150246B
Application number: CN201811069579.1A
Authority: CN
Inventors: 邓敬贤; 亢慧玲; 胡剑锋; 张国松
Original assignee: Beijing Sigbean Information Technology Co ltd
Current assignee: Core Semiconductor Technology Beijing Co ltd
Priority date: 2018-09-13
Filing date: 2018-09-13
Publication date: 2021-06-22
Anticipated expiration: 2038-09-13
Also published as: CN109150246A

Abstract

The method and the device are used for solving the problems that in the prior art, when the narrow-band interference noise is detected, the narrow-band interference noise needs to be obtained in a mode of removing a useful signal at a stage of having a data stream, the accuracy of the narrow-band interference noise is influenced by a channel estimation method, and the accuracy is low. The method comprises the following steps: in a first set period, filtering a first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame; and performing NBI carrier position detection on the received GAP frame signals in each GAP frame of the at least one GAP frame, and determining an updated NBI list, wherein the updated NBI list is used for filtering the data signals in a second set period.

Description

Method and device for detecting narrow-band interference noise and integrated circuit

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a method and an apparatus for detecting narrowband interference noise.

Background

In a Broadband Power Line Communication (BPLC) system, when a Power Line is used for spread spectrum Communication, noise interference is a main factor affecting reliability of Power Line Communication, and specifically, the Power Line noise interference mainly includes: colored background noise, periodic impulse noise asynchronous to power frequency, periodic impulse noise synchronous to power frequency, narrow-band interference noise, and random impulse noise. Wherein, the colored background noise, which is caused by low power noise source in the system, the power spectrum changes slowly with time, the power spectrum density is low, and decreases with the increasing frequency, and can be approximate to additive white Gaussian noise with zero mean value; the periodic pulse noise asynchronous with the power frequency is mainly caused by the periodic opening and closing action of a high-power equipment switch, a power spectrum is a discrete spectral line, the repetition frequency is generally within the range of 50 kHz-200 kHz, and a large amount of pulse noise can be filtered out by a filter outside the bandwidth range of BPLC; the periodic impulse noise synchronized with the power frequency is mainly caused by power equipment which works synchronously with a power supply, the impulse duration is short, generally microsecond, the power spectral density is reduced along with the increase of the frequency, the repetition rate is generally 50Hz or 100Hz, Narrow-Band interference Noise (NBI) is generated by the influence of a wireless broadcast signal on a power line channel, a sinusoidal amplitude modulation signal appears on the frequency spectrum, the continuous frequency Band is generally more than 1kHz, the duration is several hours or several days, but the intensity is inconsistent within 24 hours, and the Narrow-Band interference noise can also be called Narrow-Band interference noise; random impulse noise, caused by the switching of the network load, is unpredictable.

Since the communication bandwidth of the BPLC system is 780kHz to 12MHz, the high-power narrowband interference noise is the most important interference affecting power line communication among the above noise interferences, and when eliminating the above narrowband interference noise, the narrowband interference noise needs to be estimated first, and then the received signal needs to be adaptively filtered according to the interference frequency point. In the prior art, when estimating the narrowband interference noise, firstly, channel estimation is performed on a received signal, and then the narrowband interference noise is estimated by using a channel estimation method, specifically, a certain amount of time domain or frequency domain pilot data is inserted into a data stream to assist the estimation based on a pilot frequency assistance method, so that the narrowband interference noise is obtained by removing a useful signal when the method is applied to a stage with the data stream, and the accuracy of the narrowband interference noise is influenced by the channel estimation method, that is, interfered by the useful signal, and the accuracy is low.

In summary, how to improve the accuracy of detecting the narrowband interference noise is a problem to be solved at present.

Disclosure of Invention

In view of this, embodiments of the present invention provide a method and an apparatus for detecting narrowband interference noise, so as to improve accuracy of narrowband interference noise detection.

According to a first aspect of the embodiments of the present invention, a method for detecting narrowband interference noise is provided, including: in a first set period, filtering a first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame; and performing NBI carrier position detection on the received GAP frame signals in each GAP frame of the at least one GAP frame, and determining an updated NBI list, wherein the updated NBI list is used for filtering the data signals in a second set period.

In one embodiment, performing NBI carrier position detection on a received GAP frame signal in each GAP frame of the at least one GAP frame, and determining an updated NBI list specifically includes:

and performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and adding the determined NBI carrier position meeting the set condition to the updated NBI list.

In one embodiment, before performing NBI carrier location detection on the received GAP frame signal in each GAP frame of the at least one GAP frame and determining the updated NBI list, the method further comprises:

controlling the wave trap to pause filtering when NBI carrier position detection is carried out on the received GAP frame signal in each GAP frame of the at least one GAP frame.

In one embodiment, before filtering the first signal according to the current NBI list and determining at least one GAP frame in the first set period, the method further comprises:

and judging whether the power-on is initial power-on or not.

In one embodiment, the current NBI list is determined based on a previous cycle if not initially powered up.

In an embodiment, if the power-on is initial, before filtering the first signal according to the current narrowband interference noise NBI list and determining at least one GAP frame in the first set period, the method further includes:

determining the current list of NBIs.

In one embodiment, the determining the current list of NBIs specifically comprises: turning off the wave trap; starting a preset timer; and performing NBI detection within the time set by the timer, and determining a current NBI list.

According to a second aspect of the embodiments of the present invention, there is provided a detection apparatus of narrowband interference noise, including: the determining unit is used for filtering the first signal according to the current narrow-band interference noise NBI list in a first set period and determining at least one GAP frame; and the detection unit is used for detecting the NBI carrier wave position of the received GAP frame signal in each GAP frame of the at least one GAP frame and determining an updated NBI list, wherein the updated NBI list is used for filtering the data signal in a second set period.

In one embodiment, the detection unit is specifically configured to:

and performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and adding the determined NBI carrier position meeting the set condition to form the updated NBI list.

In one embodiment, the apparatus further comprises:

and the control unit is used for controlling the wave trap to pause filtering when NBI carrier position detection is carried out on the received GAP frame signal in each GAP frame of the at least one GAP frame.

In one embodiment, the apparatus further comprises:

and the judging unit is used for judging whether the power-on is initial power-on or not.

In one embodiment, if the power-on is initial, the apparatus further includes an initial determining unit: and in a first set period, filtering the first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame before the current NBI list.

In one embodiment, the initial determining unit is specifically configured to: turning off the wave trap; starting a preset timer; and performing NBI detection within the time set by the timer, and determining a current NBI list.

According to a third aspect of embodiments of the present invention, there is provided an integrated circuit comprising: a memory for storing one or more computer program instructions, wherein the one or more computer program instructions are executed by the processor to implement the method as described in the first aspect or any embodiment of the first aspect.

In the embodiment of the invention, in a first set period, filtering a first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame; and performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and determining an updated NBI list, wherein the updated NBI list is used for filtering the data signal in the second set period, and since the GAP frame signal does not include the data signal and only has NBI, the NBI carrier position detection is performed in the GAP frame, so that the accuracy of the detected NBI carrier position can be improved, and the accuracy of the filtering can be further improved by filtering the data signal through the detected NBI list.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a flowchart of a method for detecting narrowband interference noise according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a GAP frame according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a frame structure of a received frame or a transmitted frame according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a spectrum of a narrowband interference noise according to an embodiment of the present invention;

fig. 5 is a flowchart of another method for detecting narrowband interference noise according to an embodiment of the present invention;

fig. 6 is a flowchart of a method for detecting narrowband interference noise according to another embodiment of the present invention;

fig. 7 is a schematic diagram of a device for detecting narrowband interference noise according to an embodiment of the present invention.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specified.

Fig. 1 is a flowchart of a method for detecting narrowband interference noise according to an embodiment of the present invention, and as shown in fig. 1, the method for detecting narrowband interference noise includes:

step S100, in a first setting period, filtering the first signal according to the current narrow-band interference noise NBI list, and determining at least one GAP frame.

The GAP frame is a frame interval of at least 400us between two frames, and no data signal is transmitted in the frame interval.

For example, the following steps are carried out: specifically, as shown in fig. 2, the GAP frame exists between the reception frame 1 and the reception frame 2, between the reception frame 1 and the transmission frame 1, between the transmission frame 1 and the reception frame 1, or between the transmission frame 1 and the transmission frame 2, according to the transmission/reception situation of the data signal. The frame structure of the receiving frame or the sending frame is specifically shown in fig. 3, and includes a preamble symbol, a frame control symbol, and a traffic symbol. Specifically, when determining the GAP frame, two modes are included:

in the transmission mode, after the GAP frame is transmitted every time, the frame length of the transmission frame is already determined when the transmission frame is transmitted, so the initial position of the GAP frame can be completely determined.

In the receiving mode, if the frame control symbol can be successfully demodulated, the frame length of the received frame can be determined, and the initial position of the GAP frame can be determined.

In the embodiment of the present invention, the narrowband interference noise may also be referred to as narrowband interference.

Step S101, performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and determining an updated NBI list, where the updated NBI list is used to filter the data signal in a second set period.

Specifically, the GAP frame signals included in the first signal are signals other than the data signal of the first signal, and a narrow band interference noise NBI carrier position detection is performed on the received GAP frame signals in each GAP frame of the at least one GAP frame, and the determined NBI carrier position meeting a set condition is added to the updated NBI list. Wherein the updated NBI list is an updated list of the current NBI list.

For example, the following steps are carried out: and performing NBI carrier position detection in each GAP frame determined in the first set period, determining a plurality of NBI carrier positions, which can also be called sample points, taking 5 sample points with the largest repetition times, adding the sample points into an updated NBI list, and applying the sample points to filtering in the next period.

The NBI represents an interference spectrum with a certain width in a frequency domain, specifically as shown in fig. 4, where X: 101, Y: 4561 is one of the interference frequency points, and due to the slow time-varying characteristic of the narrow-band interference noise, in the process of detecting the position of the NBI carrier in a plurality of GAP frames, according to the characteristic that the position of the NBI carrier is basically unchanged, a mode of counting the number of times of repetition is introduced to shield the problem of misjudgment caused by single detection, and improve the reliability of NBI detection.

In the embodiment of the invention, in a first set period, filtering a first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame; and performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and determining an updated NBI list, wherein the updated NBI list is used for filtering the data signal in the second set period, and because no data signal is received or transmitted in the GAP frame and only NBI exists, the NBI carrier position detection in the GAP frame is not influenced by the data signal, the accuracy of the detected NBI carrier position can be improved, and the data signal is filtered through the detected and determined NBI list, so that the filtering accuracy can be further improved.

In one embodiment, before step S101, the notch filter is controlled to suspend filtering when NBI carrier position detection is performed on the received GAP frame signal in each GAP frame of the at least one GAP frame. Specifically, before receiving each known GAP frame, the trap filter is turned off, that is, the trap filter is skipped over on the data receiving path, and at this time, the received data is not processed by the trap filter, and the NBI carrier position can be detected. After each GAP frame is detected, the wave trap needs to be opened again, the wave trap is processed according to the current NBI list, if the current GAP frame reaches the frame control number of the first set period, the current NBI list needs to be updated to be an updated NBI list, the timeliness of the wave trap processing is guaranteed, and if the current GAP frame does not reach the frame control number of the tracking period, the current NBI list is not updated, and the current NBI list is still used for the wave trap processing.

In one embodiment, before step S100, the method further comprises: judging whether a detection device of the narrow-band interference noise is initially powered on, and determining the source of the current NBI list according to the judgment result, wherein the judgment result comprises two conditions:

in case one, if not the initial power-up, the current NBI list is determined based on the last cycle.

For example, the current list of NBIs is an updated list of NBIs for a previous cycle of the first set of cycles.

In a second case, if the power is initially turned on, before filtering the first signal according to the current narrow-band interference noise NBI list and determining at least one GAP frame in the first set period, the method further includes: determining the current list of NBIs.

Specifically, the method for determining the current NBI list specifically includes: turning off the wave trap; starting a preset timer; and performing NBI detection within the time set by the timer, and determining a current NBI list.

The following describes a method for detecting narrowband interference noise in a specific embodiment. A specific method for detecting narrowband interference noise is shown in fig. 5.

Step S500, determining whether the detection device of the narrowband interference noise is initially powered on, if so, performing step S5011, and if not, performing step S5021.

Step S5011, turning off the trap, and receiving the data signal.

Step S5012, start timer.

And step S5013, judging whether the timer is overtime, if not, executing step S5014, and if so, executing step S5021.

Step S5014, NBI carrier position detection is performed on the data signal.

And step S5015, determining whether the frame is the first frame, if so, storing the detected NBI carrier position in an NBI candidate list, and if not, executing step S5016.

And S5016, judging whether the detected NBI carrier positions are repeated or not, if so, executing the step S5017, and if not, storing the NBI carrier positions in the NBI candidate list.

And S5017, storing the NBI carrier position into an NBI detection result list, and performing filtering processing on the trap in the step S5021.

And step S5021, starting a wave trap according to the NBI detection result list determined in the step S5017.

Step S5022, receiving or transmitting a data signal.

Step S5023, determining whether a GAP frame can be acquired, if yes, performing step S5024, and if not, returning to perform step S5022.

And step S5024, closing the wave trap.

Step S5025, NBI carrier position detection is performed on the data signal.

And step S5026, caching the detected NBI carrier position into a local NBI list.

Step S5027, determining whether the NBI carrier position detected in step S5026 is an nth frame, where the nth frame is a frame control number, if so, performing step S5028, and if not, continuing to perform the next NBI carrier position detection using the NBI detection result list determined in step S5017.

Step S5028, determining whether the NBI carrier positions detected in the nth frame are repeated, if yes, performing step S5029, and if not, continuing to perform the next NBI detection by using the NBI detection result list determined in step S5017.

And step S5029, updating an NBI detection result list for detecting the position of the NBI carrier wave next time.

In the embodiment of the invention, NBI carrier position detection is used in the initial state, so that the problems that GAP frames cannot be obtained and NBI carrier position detection cannot be carried out due to NBI interference can be solved, and the NBI detection result list obtained in the initial state can be used for carrying out notch processing on the data signals until NBI detection in the next set period is completed.

In a possible implementation manner, each time NBI carrier position detection is performed, a specific detection method is shown in fig. 6, and includes:

step S601, receiving N symbols of Orthogonal Frequency Division Multiplexing (OFDM) within the GAP frame interval.

Step S602, performing Fast Fourier Transform (FFT) processing on the N OFDM symbols to obtain rn (k), where rn (k) is a frequency domain expression of a signal, N is an OFDM symbol index, N is 0 to N-1, k is a carrier index, and k is 0 to 511.

In particular, in the receiving phase, the received signal is represented as

Where s (t) represents the transmitted signal, h (t) is the channel transfer function, n (t) is additive white gaussian noise, and m (t) is narrowband interference noise. After sampling and FFT transformation, r (k) ═ s (k) · h (k) + n (k) + m (k), the power of the frequency domain signal and the interference noise is calculated as,

due to the GAP frame interval stage, the received signal is denoted as r (t) ═ n (t) + m (t), and the frequency domain is denoted as r (k) ═ n (k) + m (k).

Step S603, calculating power frq _ pwr [ i ] [ k ] of each subcarrier within a bandwidth (band), averaging the N OFDM symbols to obtain an average value psm (k) of subcarrier power, averaging effective carriers within the band, and determining an average power PM1 of carrier interference, where i is an OFDM symbol index, i is 0 to N-1, k is a carrier index, and k is 0 to 511.

Specifically, the power calculation of the frequency domain noise and the interference, i.e. the subcarrier power at the GAP frame interval stage, is,

the power of each carrier interference in the frequency domain is calculated as,

step S604, calculating a threshold, and selecting 5 candidate taps according to the threshold, where the threshold is Thr0 ═ fac0 × PM1, and the fac0 is preset.

And step S605, calculating an interference threshold Thr1 and a noise threshold Thr2 according to the thresholds.

Step S606, determining a relationship between the interference threshold Thr1 and the noise threshold Thr2, if Thr1 ≦ fac0 ≦ Thr2, determining that there is no narrow-band interference in the GAP frame interval, and ending the detection, if Thr1 ≦ fac0 ≦ Thr2, executing step S607.

And step S607, calculating a candidate decision threshold Thr0 ═ fac1 ═ Thr1, wherein fac1 is preset.

And step S608, in the 5 candidate taps in step S604, determining the tap with the power greater than Thr0 as the final tap, recording the final tap as the position as the detection result, and ending the detection.

Fig. 7 is a schematic diagram of a device for detecting narrowband interference noise according to an embodiment of the present invention. As shown in fig. 7, the detection apparatus of the narrowband interference noise of the present embodiment includes: a determination unit 701 and a detection unit 702.

The determining unit 701 is configured to filter the first signal according to a current narrowband interference noise NBI list in a first set period, and determine at least one GAP frame; a detecting unit 702, configured to perform NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and determine an updated NBI list, where the updated NBI list is used to filter the data signal in the second set period.

Optionally, the detection unit is specifically configured to: and performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame, and adding the determined NBI carrier position meeting the set condition to the updated NBI list.

Optionally, the updated NBI list is an updated list of the current NBI list.

In one embodiment, the apparatus further comprises: a control unit 703, configured to control the notch filter to pause filtering when performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame.

Optionally, the apparatus further comprises: the determining unit 704 determines whether the power-on is initial.

Optionally, if not initially powered on, the current NBI list is determined according to the previous cycle.

Optionally, if the power is initially turned on, the apparatus further includes an initial determining unit: and in a first set period, filtering the first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame before the current NBI list.

As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or computer program product. Accordingly, various aspects of the present invention may take the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a "circuit," module "or" system. Further, aspects of the invention may take the form of: a computer program product embodied in one or more computer readable media having computer readable program code embodied thereon.

Any combination of one or more computer-readable media may be utilized. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated signal may take any of a variety of forms, including, but not limited to: electromagnetic, optical, or any suitable combination thereof. The computer readable signal medium may be any of the following computer readable media: is not a computer readable storage medium and may communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including: object oriented programming languages such as Java, Smalltalk, C + +, and the like; and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package; executing in part on a user computer and in part on a remote computer; or entirely on a remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

The flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention described above describe various aspects of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer readable medium that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting narrow-band interference noise is characterized by comprising the following steps:

determining a current list of narrowband interference noise NBI;

in a first set period, filtering a first signal according to a current narrow-band interference noise NBI list, and determining at least one GAP frame;

performing NBI carrier position detection on a received GAP frame signal in each GAP frame of the at least one GAP frame, and determining an updated NBI list, wherein the updated NBI list is used for filtering data signals in a second set period;

the performing NBI carrier position detection on the received GAP frame signal in each GAP frame of the at least one GAP frame comprises:

receiving at least N symbols of orthogonal frequency division multiplexing technology within the GAP frame interval;

performing fast Fourier transform processing on the N symbols of the orthogonal frequency division multiplexing technology to obtain a frequency domain form signal;

determining the average power of carrier interference according to the frequency domain form signal;

calculating a threshold according to the average power, and determining a candidate tap according to the threshold;

determining an interference threshold and a noise threshold according to the threshold;

calculating to obtain a candidate decision threshold according to the interference threshold and the noise gate;

and recording the tap with the power larger than the candidate judgment threshold in the candidate tap taps as a position as a detection result.

2. The method of claim 1, wherein prior to performing NBI carrier location detection on the received GAP frame signal in each of the at least one GAP frames and determining an updated NBI list, the method further comprises:

and controlling the wave trap to pause filtering when NBI carrier position detection is carried out on the received GAP frame signal in each GAP frame of the at least one GAP frame.

3. The method of claim 1, wherein the determining a current list of narrowband interfering noise NBIs comprises:

and judging whether the power-on is initial power-on or not.

4. The method of claim 3 wherein the current list of NBIs is determined based on a previous cycle if not initially powered up.

5. The method of claim 3, wherein the determining the current list of narrowband interference Noise (NBI) s further comprises, if initially powered on:

turning off the wave trap;

starting a preset timer;

and performing NBI detection within the time set by the timer, and determining a current NBI list.

6. A device for detecting a narrowband interference noise, comprising:

an initial determination unit, configured to determine a current list of narrowband interference noise NBI;

the determining unit is used for filtering the first signal according to the current narrow-band interference noise NBI list in a first set period and determining at least one GAP frame;

a detecting unit, configured to perform NBI carrier position detection on a received GAP frame signal in each GAP frame of the at least one GAP frame, and determine an updated NBI list, where the updated NBI list is used to filter a data signal in a second set period;

wherein, when determining the current narrowband interference noise NBI list, the detecting unit is specifically configured to: receiving at least N symbols of orthogonal frequency division multiplexing technology within the GAP frame interval; performing fast Fourier transform processing on the N symbols of the orthogonal frequency division multiplexing technology to obtain a frequency domain form signal; determining the average power of carrier interference according to the frequency domain form signal; calculating a threshold according to the average power, and determining a candidate tap according to the threshold; determining an interference threshold and a noise threshold according to the threshold; calculating to obtain a candidate decision threshold according to the interference threshold and the noise gate; and recording the tap with the power larger than the candidate judgment threshold in the candidate tap taps as a position as a detection result.

7. The apparatus of claim 6, further comprising:

and the control unit is used for controlling the wave trap filter to pause filtering when NBI carrier position detection is carried out on the received GAP frame signal in each GAP frame of the at least one GAP frame.

8. The apparatus of claim 6, further comprising:

9. The apparatus of claim 8, wherein a current list of NBIs is determined based on a previous cycle if not initially powered on.

10. The apparatus of claim 8, wherein if initially powered on, the initial determining unit is specifically configured to:

turning off the wave trap;

starting a preset timer;

11. An integrated circuit, comprising: memory for storing one or more computer program instructions, wherein the one or more computer program instructions are executed by the processor to implement the method of any of claims 1-5.