WO2016165427A1

WO2016165427A1 - Interference identification method and apparatus

Info

Publication number: WO2016165427A1
Application number: PCT/CN2016/070727
Authority: WO
Inventors: 张玉杰; 张万帅
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-08-14
Filing date: 2016-01-12
Publication date: 2016-10-20
Also published as: CN106470176A

Abstract

The present invention provides an interference identification method and apparatus. The method comprises: acquiring frequency domain data of a frame baseband and user data of each user in the frame baseband; generating interference data of the frame baseband according to the frequency domain data of the baseband and the user data of each user; successively acquiring a preset quantity of frames of baseband interference data, performing statistics collection on all interference data and analyzing all the interference data, and generating an analysis result; and carrying out an interference coordination policy on a medium access control (MAC) layer according to the analysis result. In the interference identification method and apparatus provided in the present invention, the processes of interference data acquisition and interference data analysis are implemented in a background service, and service data scheduling does not need to be stopped; the interference data is acquired successively, statistics collection is performed on the interference data and the interference data is analyzed, thereby improving the precision of the analysis result; in addition, in the present invention, an interference coordination policy is carried on a MAC layer, thereby solving the disadvantage of failing to integrate a related frequency sweep technology with a base station system to perform follow-up interference processing.

Description

Interference identification method and device

Technical field

The present invention relates to the field of communications, and in particular, to an interference recognition method and apparatus.

Background technique

In the communication system, the signals transmitted between the base station and the terminal are subject to various interferences and noises in the actual environment, and the identification of these interferences and noises is a necessary precondition for interference processing, especially the identification of interference at the receiving end. Many times, it directly affects whether user data can be correctly decoded.

The related interference identification technology mainly focuses on two aspects: the first aspect is to identify the interference from the pilot received signal, and subtract the pilot sequence transmission data from the received pilot data to obtain the interference information on the pilot. As user interference information data, however, this method is not accurate enough, the interference on the pilot carrier and the interference on the service data can not be simply equivalent; the second aspect is the frequency sweep technology, the frequency sweep technology is relatively accurate, and the frequency sweep technology Most of the data is swept by the instrument, and the business data scheduling needs to be stopped. Then the instrument needs to be moved continuously because the interference is different in different places, and the instrument can only identify the interference, and cannot combine with the base station system for the next interference processing; or use the baseband. Processing to perform frequency sweeping also requires stopping normal business data scheduling.

Summary of the invention

The invention provides an interference identification method and device, the purpose of which is to solve the problem that the related frequency-based interference recognition technology needs to stop the service data scheduling.

In order to achieve the above object, an embodiment of the present invention provides an interference identification method, including:

Obtaining one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Generating interference data of the baseband of the frame according to the baseband frequency domain data and the user data of each user;

Continuously acquiring interference data of a baseband of a preset number of frames, and collecting and analyzing all interference data to generate an analysis result;

According to the analysis result, an interference coordination strategy is adopted for the medium access control MAC layer.

Optionally, the user data includes channel estimation values and decoding results.

Optionally, the step of acquiring one frame of the baseband frequency domain data and the user data of each user in the baseband of the frame includes:

Obtaining one frame of baseband frequency domain data received by the baseband receiving end;

Obtaining channel estimation values and decoding results of each user after the baseband frequency domain data is processed by the baseband receiving end.

Optionally, the step of generating interference data of the baseband of the frame according to the baseband frequency domain data and the user data of each user, Specifically include:

Generating channel reception data of the user according to the decoding result of each user and the channel estimation value;

The channel reception data of all users is summed to obtain reconstructed data;

The baseband frequency domain data is subtracted from the reconstructed data to obtain interference data of the baseband of the frame.

Optionally, the step of generating the channel receiving data of the user according to the decoding result of each user and the channel estimation value includes:

The coding result of each user is sequentially encoded, modulated, and mapped to generate carrier data of the user;

The carrier data is multiplied by the channel estimate to derive the channel reception data for the user.

In order to achieve the above object, an embodiment of the present invention further provides an interference recognition apparatus, including:

Obtaining a module, configured to acquire one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Generating a module, configured to generate interference data of the baseband of the frame according to baseband frequency domain data, user data of each user, and interference data of the baseband of the frame;

The analysis module is configured to continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all interference data to generate an analysis result;

The coordination module is configured to adopt an interference coordination strategy for the medium access control MAC layer according to the analysis result.

Optionally, the acquiring module specifically includes:

a first acquiring submodule, configured to obtain one frame of baseband frequency domain data received by the baseband receiving end;

The second obtaining submodule is configured to obtain a channel estimation value and a decoding result of each user after the baseband frequency domain data is processed by the baseband receiving end.

Optionally, the generating module specifically includes:

Generating a submodule, configured to generate channel reception data of the user according to a decoding result of each user and a channel estimation value;

a summation submodule, configured to sum the channel reception data of all users to obtain reconstructed data;

The data generation sub-module is configured to subtract the reconstructed data from the baseband frequency domain data to obtain interference data of the baseband of the frame.

Optionally, the generating the submodule specifically includes:

a carrier unit, configured to sequentially encode, modulate, and map the decoding result of each user to generate carrier data of the user;

The receiving data unit is configured to multiply the carrier data by a channel estimation value to obtain channel reception data of the user.

The above solution of the embodiment of the present invention at least includes the following beneficial effects:

The interference identification method and apparatus provided by the embodiments of the present invention, the process of acquiring interference data and analyzing the interference data is completed in the background service, and the service data scheduling does not need to be stopped; the interference data is continuously acquired and statistically analyzed, and the accuracy of the analysis result is improved; The embodiment of the invention adopts an interference coordination strategy for the MAC layer, which solves the disadvantage that the related instrument frequency sweeping technology cannot be combined with the base station system to perform the next interference processing.

DRAWINGS

1 is a flow chart showing the basic steps of Embodiment 1 of the interference recognition method of the present invention;

2 is a flow chart showing the basic steps of the second embodiment of the interference identification method of the present invention;

3 is a flow chart showing the basic steps of the third embodiment of the interference recognition method of the present invention;

4 is a flow chart showing the basic steps of Embodiment 4 of the interference recognition method of the present invention;

FIG. 5 is a schematic diagram showing the structure of an interference recognition apparatus according to an embodiment of the present invention.

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in the following description.

The embodiments of the present invention are directed to the interference recognition technology based on the frequency sweep technology in the related art, and most of the problems are performed by performing frequency sweeping on the instrument, and the service data scheduling needs to be stopped, and the instrument can only identify the interference and cannot perform the next interference processing problem, and provides a The interference identification method and device, the process of acquiring the interference data and analyzing the interference data are completed in the background service, and the service data scheduling is not required to be stopped; and the embodiment of the present invention adopts an interference coordination strategy for the MAC layer to solve the related interference based on the frequency sweeping technology. The identification method cannot solve the disadvantages of interference processing.

Referring to FIG. 1, an embodiment of the present invention provides an interference identification method, including:

Step 101: Acquire one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Step 102: Generate interference data of the baseband of the frame according to the baseband frequency domain data and the user data of each user.

Step 103: continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all interference data to generate an analysis result;

Step 104: Perform an interference coordination strategy on the medium access control MAC layer according to the analysis result.

In the above embodiment of the present invention, the baseband frequency domain data received by the baseband receiving end and the user data received by each user are used to generate the interference data of the baseband of the frame, and the interference data of the multiframe baseband is statistically analyzed. , adopt an interference coordination strategy. The whole process is completed in the background business, without stopping the business data scheduling, and does not affect the normal business. In the line, most of the relevant frequency sweeping technology is swept by the instrument, and the business data scheduling needs to be stopped, and then the instrument needs to be moved continuously, which improves the operability of the interference recognition technology. According to the analysis result, the embodiment of the present invention adopts an interference coordination policy for the medium access control MAC layer, and solves the disadvantage that the related instrument frequency sweeping technology cannot be combined with the base station system to perform the next interference processing.

In the foregoing embodiment of the present invention, statistical analysis is performed on the interference data, and an interference coordination strategy is adopted for the medium access control MAC layer according to the analysis result. Generally, the interference coordination strategy mainly includes the following: if the analysis result shows a certain If the noise floor rise is obvious on some radio bearers, the scheduling on the RB needs to be coordinated with the neighboring area. If the analysis result shows that the pilot pollution is serious, the pilot configuration parameters need to be coordinated with the neighboring area to avoid mutual interference; if the interference analysis result If the display continues to have monophonic interference, it can be eliminated directly. Further, in a particular embodiment of the invention, the user data includes channel estimate values and decoding results.

Generally, in the related art, the interference data is obtained by acquiring the pilot data and the channel estimation value at the baseband receiving end, thereby performing interference identification, and the interference on the pilot carrier is not simply equivalent to the interference on the service data. In a specific embodiment of the invention, the interference data is obtained by acquiring the baseband frequency domain data and the channel estimation value and the decoding result of each user, covering all the data symbols, and the statistical information is more comprehensive and accurate. .

That is, as shown in FIG. 2, the second embodiment of the present invention provides an interference identification method, and the method specifically includes:

Step 201: Acquire one frame of baseband frequency domain data received by the baseband receiving end.

Step 202: Obtain channel estimation values and decoding results of each user after the baseband frequency domain data is processed by the baseband receiving end.

Step 203: Generate interference data of the baseband of the frame according to the baseband frequency domain data and the user data of each user.

Step 204: continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all interference data to generate an analysis result;

Step 205: Perform an interference coordination policy on the medium access control MAC layer according to the analysis result.

In the above embodiment of the present invention, the baseband frequency domain data is the original frequency domain data received by the antenna receiving end, processed by the intermediate radio frequency, and then subjected to the fast Fourier transform FFT; the baseband frequency domain data is processed by the receiving end ( Channel estimation, equalization, discrete Fourier transform (IDFT, decoding), the user's decoding result, and the channel estimation value obtained during processing to obtain the interference data of the frame baseband. The baseband frequency domain data is data actually received by the baseband receiving end, and the decoding result is data actually sent to the MAC layer, and the channel estimation value reflects the influence of the channel on the transmission data. Therefore, in a specific embodiment of the present invention, The acquired interference data is more accurate.

Referring to FIG. 3, a third embodiment of the present invention provides an interference identification method, where the method specifically includes:

Step 301: Acquire one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Step 302: Generate channel reception data of the user according to the decoding result of each user and the channel estimation value.

Step 303, summing channel receiving data of all users, and obtaining reconstructed data;

Step 304: Subtract the reconstructed data from the baseband frequency domain data to obtain interference data of the baseband of the frame.

Step 305: continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all interference data to generate an analysis result;

Step 306: Perform an interference coordination strategy on the medium access control MAC layer according to the analysis result.

In the above embodiment of the present invention, the decoding result of each user is multiplied by the influence of the channel, and the channel reception data of the user, that is, the reception data without interference, is obtained. Obtaining channel reception data of all users on the baseband, and subtracting the channel reception data of all users on the baseband by using baseband frequency domain data, and obtaining interference data.

Referring to FIG. 4, a fourth embodiment of the present invention provides an interference identification method, where the method specifically includes:

Step 401: Acquire one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Step 402: sequentially code, modulate, and map the decoding result of each user to generate carrier data of the user.

In step 403, the carrier data is multiplied by the channel estimation value to obtain channel reception data of the user.

Step 404, summing channel receiving data of all users, and obtaining reconstructed data;

Step 405: Subtract the reconstructed data from the baseband frequency domain data to obtain interference data of the baseband of the frame.

Step 406: Continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all interference data to generate an analysis result;

Step 407: Perform an interference coordination strategy on the medium access control MAC layer according to the analysis result.

In the above embodiment of the present invention, the decoding result of each user is sequentially encoded, modulated, and mapped, and the reconstruction of the transmitting end is performed to obtain carrier data of each user, and then the carrier data is multiplied by the channel estimation value. The channel reception data of the user is obtained. Among them, through the processing of a series of transmitting ends such as encoding, modulation and mapping, the obtained channel receiving data is more accurate; and the whole process can be completed in the background task without stopping the service data scheduling.

In order to achieve the above objective, referring to FIG. 5, an embodiment of the present invention further provides an interference identification apparatus, including:

The obtaining module 111 is configured to acquire one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

The generating module 112 is configured to generate interference data of the baseband of the frame according to the baseband frequency domain data and the user data of each user;

The analyzing module 113 is configured to continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all the interference data to generate an analysis result;

The coordination module 114 is configured to adopt an interference coordination strategy for the medium access control MAC layer according to the analysis result.

Specifically, in the above embodiment of the present invention, the user data includes a channel estimation value and a decoding result.

Specifically, in the foregoing embodiment of the present invention, the obtaining module 111 specifically includes:

Specifically, in the foregoing embodiment of the present invention, the generating module 112 specifically includes:

Specifically, in the foregoing embodiment of the present invention, the generating the sub-module specifically includes:

It should be noted that the interference identification device provided by the embodiment of the present invention is a device applying the above method, that is, all the embodiments of the foregoing method are applicable to the device, and all of the same or similar beneficial effects can be achieved.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Industrial applicability

In the embodiment of the present invention, the process of acquiring the interference data and analyzing the interference data is completed in the background service, and the service data scheduling is not required to be stopped; the interference data is continuously acquired and statistically analyzed, and the accuracy of the analysis result is improved; and the MAC layer is implemented in the embodiment of the present invention. The interference coordination strategy is adopted to solve the drawbacks that the related instrument frequency sweeping technology cannot be combined with the base station system for the next interference processing.

Claims

An interference identification method includes:

Obtaining one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Generating interference data of the baseband of the frame according to the baseband frequency domain data and user data of each user;

Continuously acquiring interference data of a baseband of a preset number of frames, and collecting and analyzing all interference data to generate an analysis result;

According to the analysis result, an interference coordination strategy is adopted for the medium access control MAC layer.
The interference identification method of claim 1, wherein the user data comprises a channel estimation value and a decoding result.
The interference identification method according to claim 2, wherein the step of acquiring one frame of baseband frequency domain data and user data of each user in the frame baseband comprises:

Obtaining one frame of baseband frequency domain data received by the baseband receiving end;

Obtaining channel estimation values and decoding results of each user of the baseband frequency domain data processed by the baseband receiving end.
The interference identification method according to claim 2, wherein the step of generating the interference data of the baseband of the frame according to the baseband frequency domain data and the user data of each user includes:

Generating channel reception data of the user according to the decoding result of each user and the channel estimation value;

The channel reception data of all users is summed to obtain reconstructed data;

The baseband frequency domain data is subtracted from the reconstructed data to obtain interference data of the frame baseband.
The interference identification method according to claim 4, wherein the step of generating channel reception data of the user according to the decoding result of each user and the channel estimation value comprises:

The coding result of each user is sequentially encoded, modulated, and mapped to generate carrier data of the user;

The carrier data is multiplied by the channel estimate to derive channel reception data for the user.
An interference recognition device comprising:

Obtaining a module, configured to acquire one frame of baseband frequency domain data and user data of each user in the baseband of the frame;

Generating a module, configured to generate interference data of the baseband of the frame according to the baseband frequency domain data and user data of each user;

The analysis module is configured to continuously acquire interference data of a baseband of a preset number of frames, and collect and analyze all interference data to generate an analysis result;

The coordination module is configured to adopt an interference coordination strategy for the medium access control MAC layer according to the analysis result.
The interference recognition apparatus according to claim 6, wherein said user data includes a channel estimation value and a decoding result.
The interference recognition device of claim 7, wherein the obtaining module specifically comprises:

a first acquiring submodule, configured to obtain one frame of baseband frequency domain data received by the baseband receiving end;

And a second obtaining submodule, configured to obtain a channel estimation value and a decoding result of each user after the baseband frequency domain data is processed by the baseband receiving end.
The interference recognition device of claim 7, wherein the generating module specifically comprises:

Generating a submodule, configured to generate channel reception data of the user according to a decoding result of each user and a channel estimation value;

a summation submodule, configured to sum the channel reception data of all users to obtain reconstructed data;

And a data generating submodule configured to subtract the reconstructed data from the baseband frequency domain data to obtain interference data of the baseband of the frame.
The interference recognition apparatus according to claim 9, wherein the generating sub-module specifically comprises:

a carrier unit, configured to sequentially encode, modulate, and map the decoding result of each user to generate carrier data of the user;

And receiving a data unit, configured to multiply the carrier data by the channel estimation value to obtain channel reception data of the user.