CN112910581A - Interference positioning method, interference positioning device and distributed base station system - Google Patents
Interference positioning method, interference positioning device and distributed base station system Download PDFInfo
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- CN112910581A CN112910581A CN201911137636.XA CN201911137636A CN112910581A CN 112910581 A CN112910581 A CN 112910581A CN 201911137636 A CN201911137636 A CN 201911137636A CN 112910581 A CN112910581 A CN 112910581A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
- H04W16/20—Network planning tools for indoor coverage or short range network deployment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The embodiment of the application provides an interference positioning method, an interference positioning device and a distributed base station system, wherein the method is applied to a Base Band Unit (BBU) in the base station system, and the base station system is connected with a Local Maintenance Terminal (LMT) through a network cable, and comprises the following steps: acquiring 5G air interface data in a current network scene; performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data; performing parameter calculation on the spectrum analysis data to obtain spectrum parameters; transmitting the spectrum parameters to an LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters; and determining an interference signal according to the LMT curve spectrogram. By acquiring 5G air interface data in the current network scene in the base station system and performing spectrum analysis and performing parameter calculation on the spectrum analysis data, the positioning interference signal is simpler, the engineering is more practical, a special interference frequency-sweeping instrument is omitted, and the engineering maintenance cost and the network optimization cost are reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an interference positioning method, an interference positioning apparatus, and a distributed base station system.
Background
With the development of fifth-Generation mobile communication, by virtue of the capability characteristics of high bandwidth, high reliability, low time delay, massive connection and the like, the application range of 5G (5th Generation mobile networks or 5th Generation wireless systems or 5th-Generation, fifth-Generation mobile communication technology) is far beyond the traditional communication and mobile internet, and the method is comprehensively expanded to various industries and fields. Typical 5G application scenarios include automatic driving, remote control, VR (Virtual Reality)/AR (Augmented Reality), smart manufacturing, smart grid, etc., which are originally limited by network capabilities and experience is not good or can not be realized, and will accelerate maturity and large-scale popularization in the 5G era. Referring to fig. 1, a 5G digital indoor distributed base station system is shown, and in the face of future 5G indoor coverage, the 5G digital indoor distributed base station system can support 4 × 4MIMO (Multiple Input Multiple output), can meet high-capacity requirements of 5G eMBB (enhanced Mobile Broadband) services and the like, and meets service requirements of 5G indoor video, VR, AR and the like.
In the 5G communication era, high frequency bands such as 3.5GHz, 4.9GHz, 28G, and 39G are mainly used, and the high frequency loss is large, the coverage distance is short, which will lead to a massive increase in the number of the terminals of the 5G digital indoor distributed base station system, and meanwhile, in the practical network application, the problems that the indoor coverage distance of the 5G digital indoor distributed base station system is reduced and the receiving and demodulating capability is reduced due to application scene deployment or the existence of external same frequency band interference signals may occur, and the like, which have a bad influence on the actual 5G application VR and AR service effects. Due to performance degradation caused by interference, the currently adopted interference positioning means is to perform full-band scanning by an NR (New Radio, New air interface) scanner to position the intensity of an external interference signal.
However, when the interference positioning is performed in this way, specialized equipment such as an NR scanner instrument and a directional antenna needs to be used, and a specialized technician needs to perform the operation, which consumes time for interference troubleshooting, is low in work efficiency, and is high in instrument cost.
Disclosure of Invention
The embodiment of the application provides an interference positioning method, which aims to solve the problems of time consumption, low efficiency and high instrument cost of interference positioning after a 5G digital indoor distributed base station system is interfered.
Correspondingly, the embodiment of the application also provides an interference positioning device, which is used for ensuring the realization and the application of the method.
In order to solve the above problems, the embodiment of the present application discloses an interference positioning method, which is applied to a baseband processing unit BBU in a base station system, where the base station system is connected to a local maintenance terminal LMT through a network cable; the method comprises the following steps:
acquiring 5G air interface data in a current network scene;
performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data;
performing parameter calculation on the spectrum analysis data to obtain spectrum parameters;
transmitting the spectrum parameters to an LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters;
and determining an interference signal according to the LMT curve spectrogram.
Preferably, the base station communicates with a mobile terminal, and the method further includes:
starting an NR air interface interception mode;
the step of acquiring the 5G air interface data in the current network scenario specifically includes,
and acquiring 5G air interface data when information is mutually transmitted between the base station system and the mobile terminal in the NR air interface interception mode.
Preferably, the method further comprises the following steps:
configuring base station signal parameters for avoiding the interference signals; the base station signal parameters comprise a preset central frequency point and a base station system bandwidth.
Preferably, the step of performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data includes:
extracting time domain data from the 5G air interface data;
and carrying out Fourier transform on the time domain data frame by frame to obtain frequency spectrum analysis data.
Preferably, the step of performing parameter calculation on the spectrum analysis data to obtain spectrum parameters includes:
sending the spectrum analysis data to a shared memory;
and calculating parameters according to the spectrum analysis data in the shared memory to obtain spectrum parameters.
Preferably, the substep of calculating the spectral analysis data to obtain the spectral parameters further comprises:
acquiring a sampling point;
calculating the relative power of the spectral analysis data in the shared memory according to the sampling points;
and averaging and converting the relative power to obtain the frequency spectrum parameter.
Preferably, the LMT is configured to generate an LMT curve spectrogram according to the spectrum parameter and display the LMT curve spectrogram specifically,
the LMT generates the LMT curve spectrogram by adopting a graphical display mode of receiving signal amplitude-frequency response aiming at the frequency spectrum parameters;
and the LMT displays the LMT curve spectrogram.
Preferably, the step of determining an interference signal according to the LMT curve spectrogram includes:
judging whether a frequency band interval deviating from the preset central frequency point exists in the LMT curve spectrogram;
if yes, judging that the interference is interfered by the interference signal;
if not, judging that the interference signal does not interfere.
Preferably, the base station communicates with a mobile terminal, and the method further includes:
determining a frequency band of the interfering signal and/or an interference degree of the interfering signal;
the step of determining the frequency band of the interference signal and the interference degree of the interference signal is specifically,
determining the frequency band interval; the frequency band of the interference signal is in the frequency band interval;
if the number of the frequency points deviated from the preset central frequency point in the frequency band interval is more, the interference degree is higher;
conversely, the lower the degree of interference experienced.
The embodiment of the invention also discloses an interference positioning device which is applied to a base band unit BBU in the base station system, wherein the base station system is connected with the local maintenance terminal LMT through a network cable; the interference localization apparatus includes: the system comprises a physical layer module, a user plane module and an operation maintenance module; wherein the physical layer module comprises:
the data acquisition submodule is used for acquiring 5G air interface data in the current network scene;
the frequency spectrum analysis submodule is used for carrying out frequency spectrum analysis on the 5G air interface data to obtain frequency spectrum analysis data;
the user plane module comprises:
the parameter processing submodule is used for carrying out parameter calculation on the spectral analysis data to obtain spectral parameters;
the operation and maintenance module comprises:
the data transmission submodule is used for transmitting the frequency spectrum parameters to the LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters;
and the interference determining submodule is used for determining an interference signal according to the LMT curve spectrogram.
Preferably, the operation and maintenance module further includes:
the mode setting submodule is used for starting an NR air interface interception mode;
the data acquisition sub-module is specifically configured to,
and acquiring 5G air interface data when information is mutually transmitted between the base station system and the mobile terminal in the NR air interface interception mode.
Preferably, the operation and maintenance module further includes:
the interference avoidance submodule is used for configuring base station signal parameters for avoiding the interference signals; the base station signal parameters comprise a preset central frequency point and a base station system bandwidth.
Preferably, the spectrum analysis sub-module further comprises:
a data extraction unit, configured to extract time-domain data from the 5G air interface data;
and the frequency spectrum analysis unit is used for carrying out Fourier transform on the time domain data frame by frame to obtain frequency spectrum analysis data.
Preferably, the parameter processing sub-module includes:
the data cache unit is used for sending the frequency spectrum analysis data to a shared memory;
and the data calculation unit is used for calculating parameters aiming at the spectrum analysis data in the shared memory to obtain spectrum parameters.
Preferably, the data calculation sub-module includes:
a sampling point acquisition unit for acquiring sampling points;
the power calculation unit is used for calculating the relative power of the spectral analysis data in the shared memory according to the sampling points;
and the average conversion unit is used for averaging and converting the relative power to obtain the frequency spectrum parameter.
Preferably, the LMT is specifically adapted for,
aiming at the frequency spectrum parameters, generating an LMT curve spectrogram by adopting a graphical display mode of receiving signal amplitude-frequency response; and displaying the LMT curve spectrogram.
Preferably, the interference determination submodule includes:
the interference judging unit is used for judging whether a frequency band interval deviating from the preset central frequency point exists in the displayed LMT curve spectrogram;
the first judging unit is used for judging that the LMT curve spectrogram has a frequency band interval deviating from the preset central frequency point, and judging that the LMT curve spectrogram is interfered by the interference signal;
and the second judging unit is used for judging that the LMT curve spectrogram is not interfered by the interference signal when the frequency band interval deviating from the preset central frequency point does not exist.
Preferably, the operation and maintenance module further comprises:
an interference data determination submodule for determining a frequency band of the interference signal and/or an interference degree of the interference signal;
the interference data determination submodule is specifically configured to,
determining the frequency band interval; the frequency band of the interference signal is in the frequency band interval;
if the number of the frequency points deviated from the preset central frequency point in the frequency band interval is more, the interference degree is higher;
conversely, the lower the degree of interference experienced.
The embodiment of the present application further discloses a distributed base station system, including:
the distributed base station system is connected with a local maintenance terminal LMT through a network cable; the base station system comprises a baseband processing unit (BBU); the BBU comprises an interference positioning device; the interference positioning device is used for acquiring 5G air interface data in the current network scene; performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data; performing parameter calculation on the spectrum analysis data to obtain spectrum parameters; transmitting the spectrum parameters to an LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters; and determining an interference signal according to the LMT curve spectrogram.
The embodiment of the application has the following advantages:
according to the interference positioning method, the interference positioning device and the distributed base station system, 5G air interface data in the current network scene can be acquired in the base station system, spectrum analysis is carried out on the 5G air interface data, and parameter calculation is carried out on the spectrum analysis data, so that the positioning interference signal is simpler, the engineering is more practical, the interference can be quickly positioned, a special interference frequency sweeping instrument is omitted, and the engineering maintenance cost and the network optimization cost are reduced.
The interference positioning method, the interference positioning device and the distributed base station system can transmit the obtained spectrum parameters to the LMT, and then through the LMT software, an LMT curve spectrogram is generated to be displayed, interference signals are determined, the interference condition is visually displayed, the maintenance of the 5G novel digital indoor distributed base station system is simple, the product competitiveness is improved, and the visual trend of the future operation and maintenance of the 5G digital indoor distributed base station system is met.
The interference positioning method, the interference positioning device and the distributed base station system can be used for flexibly configuring the central frequency point and the variable parameter set by determining the frequency band of the interference signal and/or the interference degree of the interference signal and combining the 5G digital indoor distributed base station system, and the interference signal can be effectively avoided, so that the purposes of enhancing the coverage range and improving the receiving and demodulating capability are achieved.
Drawings
Fig. 1 is a 5G digital indoor distributed base station system;
fig. 2 is a block diagram of a distributed base station system according to an embodiment of the present application;
fig. 3 is a schematic diagram of a connection manner of modules in a distributed base station system according to the present application;
fig. 4 is a flowchart illustrating steps of an interference positioning method according to embodiment 1 of the present application;
fig. 5 is a flowchart illustrating steps of an interference positioning method according to embodiment 2 of the present application;
fig. 6 is a schematic diagram illustrating a display of an LMT curve spectrogram under interference in an embodiment of an interference localization method according to the present application;
fig. 7 is a block diagram of an embodiment of an interference locator according to the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
One of the core concepts of the embodiment of the application is that an interference positioning device is arranged in a base station system, the detection and management of interference signals are increased, spectrum analysis and parameter calculation are performed in a hard-soft-node mode aiming at 5G air interface data collected in a current network, the results of the spectrum analysis and the parameter calculation are uploaded to an LMT to generate an LMT curve spectrogram to be displayed, the interference signals are determined according to the LMT curve spectrogram, and then the base station parameters are configured to avoid interference.
In an embodiment of the present application, the method can be applied to various regional scenes in life, including: shopping malls, parking lots, subway stations, residential quarters, and factories, etc.
Referring to fig. 2, a block diagram of a distributed base station system according to the present application is shown, where the embodiment of the present application may specifically include:
the distributed base station system is connected with a local maintenance terminal LMT through a network cable; the base station system comprises a baseband processing unit (BBU); the BBU comprises an interference positioning device; the interference positioning device is used for acquiring 5G air interface data in the current network scene; performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data; performing parameter calculation on the spectrum analysis data to obtain spectrum parameters; transmitting the spectrum parameters to an LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters; and determining an interference signal according to the LMT curve spectrogram.
In an embodiment of the present application, the distributed base station system further includes: an antenna, a PRRU (Radio Unit, Pico Remote Radio Unit), and a RHUB (Remote HUB, Remote convergence Unit).
Referring to fig. 3, which is a schematic diagram illustrating a connection manner of modules in a distributed base station according to the present application, the PRRU performs information mutual transmission with a mobile terminal through an antenna; the PRRU is connected with the RHUB through six types of wires or coaxial cables, the RHUB is connected with the BBU through optical fibers, and the BBU is connected with the LMT through network cables. Optionally, the distributed base station system further includes a base station signal parameter module, where the base station signal parameter module is used to configure the preset central frequency point and the base station system bandwidth.
The PRRU is used for realizing conversion of radio frequency signals and digital signals and access processing of broadband signals.
In a specific implementation, the PRRU may receive downlink digital signals transmitted by six types of lines, decompose the data according to a framing format, perform digital signal processing on the recovered data again, and recover the data into radio frequency signals through intermediate frequency algorithms such as filtering and interpolation and digital-to-analog conversion, thereby transmitting the radio frequency signals through an antenna; and/or the NR uplink radio frequency signal received by the antenna is converted into an intermediate frequency signal by the mixing unit, and the intermediate frequency signal is transmitted to the remote convergence unit through six types of lines after being processed by analog-to-digital conversion and an FPGA (Field-Programmable Gate Array).
Optionally, the RHUB is used to implement functions of photoelectric conversion, digital intermediate frequency signal combining, downlink signal power dividing and uplink signal combining,
in a specific implementation, the RHUB may transmit a baseband signal transmitted by the baseband unit through the optical fiber to the remote radio unit through six types of lines after performing power division; and/or combining uplink signals transmitted by all the remote radio frequency units and transmitting the combined uplink signals to the baseband unit through the optical fiber.
Optionally, the BBU is configured to implement modulation and demodulation of a baseband signal, and provide a Common Public Radio Interface (CPRI) Interface extension unit.
In a specific implementation, the BBU may modulate the downlink direction to generate a baseband signal, and send the baseband signal to the remote convergence unit; and/or demodulating the signal transmitted by the remote convergence unit in the uplink direction, and positioning the interference signal.
Optionally, the LMT is configured to implement configuration, management, and maintenance of each network element of the entire 5G distributed system, and display an interference spectrum.
Example 1
Referring to fig. 4, a flowchart of steps of an interference positioning method embodiment 1 of the present application is shown, where this embodiment may be applied to a Base Band Unit (BBU) in a Base station system, and the Base station system is connected to a local maintenance terminal LMT through a network cable.
The embodiment of the application specifically comprises the following steps:
the current network scene refers to a scene for information mutual transmission between a current base station system and the mobile terminal; the 5G air interface data refers to 5G information data acquired through a new air interface.
As an example, a current network scenario may include a distributed base station system deployed in an underground parking lot with mobile terminals in the parking lot for networking.
In a specific implementation, the interference positioning apparatus may receive, through a new air interface, data transmitted by using a 5G protocol when information is transmitted between the current base station system and the mobile terminal. The conventional Air Interface (Air Interface) is a wireless transmission specification between a base station System and a Mobile phone, defines the use frequency, bandwidth, Access Time, coding method and handover of each wireless channel, and generally refers to protocols such as GSM (Global System for Mobile Communication), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access) and TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), and the new Air Interface is a brand new Air Interface developed for 5G.
As an example of a specific application of the present application, a distributed base station system may be deployed in an underground parking lot, and receive data transmitted by using a 5G protocol between the base station system and a mobile terminal that is being networked through a new air interface on an interference positioning device of the distributed base station system.
as an example, the spectral analysis may include performing FFT (Fast Fourier transform) on the received data.
In specific implementation, the FFT with preset sample points may be performed on time domain data of 5G air interface data, and the FFT is decomposed into smaller FFTs with the same number of points according to the FFT principle, so as to accelerate the calculation speed, and a plurality of chip processors may simultaneously run a calculation program to perform calculation, so as to achieve a calculation mode combining hardware and software, and calculate corresponding spectrum analysis data.
As an example of a specific application of the present application, an FFT of 16384 points may be adopted, specifically, the FFT of 16384 points may be decomposed into 4 FFT transforms of 4096 points, and the FFT of 16384 points is completed by using 4096FFT IP CORE (Intellectual Property CORE) of a processor in a manner of combining software and a hardware IP CORE, so as to obtain corresponding spectrum analysis data.
as an example, the parameter calculation includes buffering, averaging, scaling, and the like.
In a specific implementation, after obtaining the spectral analysis data, further parameter calculation is performed on the spectral analysis data, and the spectral parameters can be obtained by calculation methods of caching, averaging and conversion, and the spectral parameters can be used as basic parameters for generating an image.
as an example, transmitting includes transmitting over six types of wires or network cables.
In the specific implementation, an LMT (Local Maintenance Terminal) is deployed, after obtaining spectrum parameters, the spectrum parameters may be transmitted to the LMT through six types of lines or network cables, the LMT is installed with various software, the spectrum parameters may be drawn, the transmission frequency of the cables such as the six types of lines is 1 mhz to 250 mhz, when the six types of wiring systems are at 200 mhz, the comprehensive attenuation crosstalk ratio should have a large margin, which provides a bandwidth 2 times that of the five types, the six types may reach 1000 mhz, the transmission performance is higher than the five-type and ultra-five-type standards, and the Local Maintenance Terminal is most suitable for a scene with a transmission rate higher than 1000 mhz.
And step 405, determining an interference signal according to the LMT curve spectrogram.
As an example, the LMT curve spectrogram includes spectral features of a current network scenario.
In a specific implementation, after the spectrum parameters are input into the LMT software, the LMT software can process the spectrum parameters in a graphical display mode of amplitude-frequency response, and the amplitude-frequency response is the ratio of the amplitude of an output signal after a signal passes through a system to the amplitude of the signal when the signal is input, so that a spectrum characteristic LMT curve spectrogram capable of displaying a current network scene can be generated.
As an example of a specific application of the present application, when a desired signal preset in a base station system has a bandwidth of 100 megabits and a signal strength of-80, if an interfering signal has a bandwidth of 80 megabits and a signal strength of-60, the interfering signal may cause severe interference to the desired signal, which is obviously displayed in an LMT curve spectrogram, for example, the interfering signal may generate a discrete pattern similar to a peak at 80 megabits in the LMT curve spectrogram, and the interference from the interfering signal can be determined according to such discrete pattern.
In addition, the method can also be used in an outdoor macro base station system and a future millimeter wave base station system.
In the embodiment of the application, the 5G air interface data in the current network scene can be acquired in the base station system, the frequency spectrum analysis is carried out on the 5G air interface data, and the parameter calculation is carried out on the frequency spectrum analysis data, so that the positioning interference signal is simpler, the engineering is more practical, the interference can be quickly positioned, a special interference frequency sweeping instrument is omitted, and the engineering maintenance cost and the network optimization cost are reduced.
Example 2
Referring to fig. 5, a flowchart of the steps of embodiment 2 of the interference location method of the present application is shown, and the method is applied in a Base Band Unit (BBU) in a Base station system.
The method specifically comprises the following steps:
step 501, acquiring 5G air interface data in a current network scene;
in an embodiment of the present application, step 501 may include the following sub-steps:
s5011, starting an NR air interface interception mode; and acquiring 5G air interface data when information is mutually transmitted between the base station system and the mobile terminal in the NR air interface interception mode.
In a specific implementation, the NR air interface listening mode may be started when performing interference positioning, and in the NR air interface listening mode, 5G air interface data of a current network scenario may be acquired through an NR air interface, and the NR air interface may adopt an air interface new technology, such as F-OFDM (Filtered OFDM, air interface waveform technology), SCMA (Sparse Code Multiple Access, Multiple Access technology that improves spectrum efficiency by Multiple times), Polar Code (Polar Code technology), and the like.
When information is mutually transmitted between the base station system and the mobile terminal, if an interference source capable of generating an interference signal exists in a scene, data interfered by the interference signal exists in the acquired 5G air interface data, that is, the interference signal can be analyzed and positioned through the acquired 5G air interface data. The interference signal that may generate interference may be of various types, such as signal interference of base station systems of other operators, signal interference of base station systems in surrounding areas, and so on.
Step 502, performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data;
in an embodiment of the present application, step 502 may include the following sub-steps:
s5021, extracting time domain data from the 5G air interface data;
in a specific implementation, after continuously acquiring 5G air interface data through an NR air interface, it may be extracted that an independent variable is time, and a dependent variable is time domain data of signal change, that is, when the time domain data is represented in a coordinate axis, a horizontal axis is time, and a vertical axis is signal change, and then a function of values of the 5G air interface data at different times may be described through the time domain data.
S5022, carrying out Fourier transform on the time domain data frame by frame to obtain frequency spectrum analysis data;
in a specific implementation, after the time domain data is extracted, the time domain data may be subjected to frame-by-frame FFT with a subframe as a unit to obtain spectral analysis data, and the spectral analysis data may be used for further parameter calculation, so that the spectral characteristics of the current network scene may be displayed.
Step 503, performing parameter calculation on the spectrum analysis data to obtain spectrum parameters;
in an embodiment of the present application, step 503 may include the following sub-steps:
s5031, sending the spectrum analysis data to a shared memory;
in a specific implementation, the spectral analysis data is sent to the shared memory and cached in the shared memory, so that the spectral analysis data can be conveniently and quickly accessed by different CPUs (Central Processing units), and the caching in the shared memory is also beneficial to the calculation Processing of the spectral analysis data.
S5032, in the shared memory, performing parameter calculation on the spectrum analysis data to obtain spectrum parameters;
in a specific implementation, the processor may be facilitated to further calculate the spectrum analysis data in the shared memory, obtain sampling points in the spectrum analysis data, for example, calculate the relative power of the spectrum analysis data in the shared memory according to the sampling points, and may average and convert the relative power, so as to obtain the spectrum parameters that can be used to generate the image.
as an example, the LMT curve spectrogram includes spectral features of a current network scenario.
In the specific implementation, after the spectrum parameters are input in the LMT software, the LMT software can process the spectrum parameters in a graphical display mode of amplitude-frequency response, and the amplitude-frequency response is the ratio of the amplitude of an output signal after a signal passes through a system to the amplitude of a signal input by the system, so that a spectrum characteristic LMT curve spectrogram capable of displaying a current network scene can be generated, the displayed LMT curve spectrogram is a spectrum diagram which visualizes the operation of interference positioning and can more intuitively find interference and position interference, if a user wants to know the signal condition in a scene of information mutual transmission between the base station system and the mobile terminal, the user can directly check through the displayed LMT curve spectrogram, and if the interference is positioned, the interference avoidance can be performed or an interference signal source is searched for adjustment.
And 505, determining an interference signal according to the LMT curve spectrogram.
As an example, determining the interfering signal includes: it is determined whether or not it is interfered by an interference signal. In a specific implementation, after the LMT curve spectrogram is generated, the LMT curve spectrogram can be displayed in the LMT, and whether the LMT curve spectrogram is interfered by the interference signal or not and the interference degree can be judged by judging the frequency point distribution in the LMT curve spectrogram.
In an embodiment of the present application, step 505 may include the following sub-steps:
s5051: judging whether a frequency band interval deviating from the preset central frequency point exists in the LMT curve spectrogram; if yes, judging that the interference is interfered by the interference signal; if not, judging that the interference signal is not interfered;
in specific implementation, referring to fig. 6, a schematic diagram showing an LMT curve spectrogram when receiving interference in an embodiment of an interference positioning method in the present application, an LMT curve spectrogram of 5G air interface data corresponding to time domain data, is a spectrogram consisting of a series of discrete frequency points, and a central frequency point may be preset on a certain amplitude of a longitudinal axis through a base station system, and then all frequency points may be aggregated to the preset central frequency point to form a linear discrete graph, if there is a frequency band interval in which the frequency points deviate from the preset central frequency point, the discrete graph shaped like a line is interfered to form a discrete graph similar to a mountain peak, which may indicate that information mutual transmission between the base station system and a mobile terminal is interfered in the frequency band interval.
in a specific implementation, the frequency band of the interference signal may be determined by determining a value of a frequency band interval deviating from a preset central frequency point in an LMT curve spectrogram, where the frequency band of the interference signal is the frequency band interval, and the frequency band is a portion of the radio spectrum between two specific frequency boundaries. For a signal, the frequency band is the frequency range between the highest frequency and the lowest frequency contained in the signal (of course, the frequency component must be greater than a certain value). In the case of a channel, the frequency band is a frequency range between the highest frequency of a signal allowed to be transmitted and the lowest frequency of the signal allowed to be transmitted (certainly, attenuation must be within a certain range), and if the two frequencies are very different, the frequency band can be considered to be equal to the highest frequency of the signal allowed to be transmitted.
After the frequency band of the interference signal is judged, the interference degree of the received interference signal can be judged according to the frequency point quantity deviating from the preset central frequency point frequency band interval in the LMT curve spectrogram, if the frequency point quantity is more, the received interference degree is higher, and if the frequency point quantity is less, the received interference degree is lower.
In specific implementation, after determining the interference signal, in order to effectively avoid the interference signal, the base station system may reset the base station signal parameters, so as to achieve the purpose of avoiding the interference signal, and setting the base station signal parameters may include: the method comprises the steps of setting a preset central frequency point for avoiding interference signals and setting a baseband signal bandwidth capable of avoiding the interference signals, wherein the bandwidth generally refers to the frequency bandwidth occupied by the signals, when the bandwidth is used for describing a channel, the bandwidth refers to the maximum frequency bandwidth of the signals capable of effectively passing through the channel, and S201 can be executed again after the signal parameters of the base station are reset to judge whether the signals are still interfered by the interference signals or whether other interference signals can be detected.
In the embodiment of the application, on the one hand, can be through transmitting the spectrum parameter that obtains to LMT, and then through LMT's software, generate LMT curve spectrogram and show, thereby confirm interference signal, audio-visually show the interference situation, make the novel indoor distributed system of 5G maintain and become simply, the product competitiveness has been improved, satisfy the visual trend of the operation maintenance of the indoor branch system of 5G in the future, on the other hand, through confirming interference signal's frequency band and/or interference degree of interference signal, can dispose central frequency point and variable parameter set in a flexible way combining the novel indoor distributed system of 5G digitization, can carry out effectual evasion to interference signal, in order to reach reinforcing coverage, improve the purpose of receiving the demodulation ability.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required of the embodiments of the application.
Referring to fig. 7, a block diagram of an embodiment of the interference locating apparatus of the present application is shown, and is applied to a BBU in a base station system.
Wherein the interference localization apparatus 701 comprises: a physical layer module 702, a user plane module 703 and an operation and maintenance module 704.
The physical layer module 702 includes:
the data acquisition submodule is used for acquiring 5G air interface data in the current network scene;
the frequency spectrum analysis submodule is used for carrying out frequency spectrum analysis on the 5G air interface data to obtain frequency spectrum analysis data;
the user plane module 703 includes:
the parameter processing submodule is used for carrying out parameter calculation on the spectral analysis data to obtain spectral parameters;
the data transmission submodule is used for transmitting the frequency spectrum parameters to the LMT;
the operation maintenance module 704 includes:
the frequency spectrum generation submodule is used for generating and displaying an LMT curve frequency spectrum graph in the LMT software according to the frequency spectrum parameters;
and the interference determining submodule is used for determining an interference signal according to the LMT curve spectrogram.
In an embodiment of the present application, the operation maintenance module 704 further includes:
the mode setting submodule is used for starting an NR air interface interception mode;
the data acquisition sub-module is specifically configured to,
and under the NR air interface interception mode, acquiring 5G air interface data in a scene when information is mutually transmitted between the base station system and the mobile terminal.
In an embodiment of the present application, the operation maintenance module 704 further includes:
the interference avoidance submodule is used for configuring base station signal parameters for avoiding the interference signals according to the interference signals; the base station signal parameters comprise a preset central frequency point and a base station system bandwidth.
In an embodiment of the present application, the parameter processing sub-module includes:
the data cache submodule is used for sending the frequency spectrum analysis data to a shared memory;
and the data calculation submodule is used for performing parameter calculation on the spectral analysis data in the shared memory to obtain spectral parameters.
In an embodiment of the present application, the data calculation sub-module includes:
and the power calculation submodule is used for solving the relative power of the spectrum analysis data in the shared memory according to sampling points, and averaging and converting the relative power to obtain spectrum parameters.
In an embodiment of the present application, the spectrum display sub-module specifically includes:
and the spectrogram generating sub-module is used for generating an LMT curve spectrogram by adopting a graphical display mode of received signal amplitude-frequency response by the LMT software aiming at the frequency spectrum parameters and displaying the LMT curve spectrogram.
In an embodiment of the present application, the interference determination sub-module includes:
and the spectrogram display sub-module is used for displaying the LMT curve spectrogram.
The interference judgment sub-module is used for judging whether a frequency band interval deviating from the preset central frequency point exists in the displayed LMT curve spectrogram;
if yes, judging that the interference is interfered by the interference signal; the frequency band of the interference signal is within the frequency band interval;
if not, judging that the interference signal does not interfere.
The degree judgment submodule is used for judging whether the frequency point quantity deviated from the preset central frequency point in the frequency band interval is larger or not according to the received interference degree;
conversely, the lower the degree of interference experienced.
In the embodiment of the application, the 5G air interface data in the current network scene can be acquired in the base station system, the frequency spectrum analysis is carried out on the 5G air interface data, and the parameter calculation is carried out on the frequency spectrum analysis data, so that the positioning interference signal is simpler, the engineering is more practical, the interference can be quickly positioned, a special interference frequency sweeping instrument is omitted, and the engineering maintenance cost and the network optimization cost are reduced.
An embodiment of the present application further provides an apparatus, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform methods as described in embodiments of the present application.
Embodiments of the present application also provide one or more machine-readable media having instructions stored thereon, which when executed by one or more processors, cause the processors to perform the methods of embodiments of the present application.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The interference positioning method, the interference positioning apparatus, and the distributed base station system provided by the present application are introduced in detail, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (19)
1. An interference positioning method is applied to a Base Band Unit (BBU) in a base station system, and is characterized in that the base station system is connected with a Local Maintenance Terminal (LMT) through a network cable; the method comprises the following steps:
acquiring 5G air interface data in a current network scene;
performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data;
performing parameter calculation on the spectrum analysis data to obtain spectrum parameters;
transmitting the spectrum parameters to an LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters;
and determining an interference signal according to the LMT curve spectrogram.
2. The method of claim 1, wherein the base station is in communication with a mobile terminal, the method further comprising:
starting an NR air interface interception mode;
the step of acquiring the 5G air interface data in the current network scenario specifically includes,
and acquiring 5G air interface data when information is mutually transmitted between the base station system and the mobile terminal in the NR air interface interception mode.
3. The method of claim 1 or 2, further comprising:
configuring base station signal parameters for avoiding the interference signals; the base station signal parameters comprise a preset central frequency point and a base station system bandwidth.
4. The method according to claim 1, wherein the step of performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data includes:
extracting time domain data from the 5G air interface data;
and carrying out Fourier transform on the time domain data frame by frame to obtain frequency spectrum analysis data.
5. The method of claim 1, 2 or 4, wherein the step of performing parameter calculation on the spectral analysis data to obtain spectral parameters comprises:
sending the spectrum analysis data to a shared memory;
and calculating parameters according to the spectrum analysis data in the shared memory to obtain spectrum parameters.
6. The method of claim 5, wherein the substep of calculating the spectral analysis data to obtain the spectral parameters further comprises:
acquiring a sampling point;
calculating the relative power of the spectral analysis data in the shared memory according to the sampling points;
and averaging and converting the relative power to obtain the frequency spectrum parameter.
7. The method according to claim 1 or 2 or 4 or 6, wherein the LMT is configured to generate an LMT curve spectrogram according to the spectrum parameters and to display the LMT curve spectrogram specifically,
the LMT generates the LMT curve spectrogram by adopting a graphical display mode of receiving signal amplitude-frequency response aiming at the frequency spectrum parameters;
and the LMT displays the LMT curve spectrogram.
8. The method of claim 1, wherein the step of determining the interfering signal from the LMT profile spectrogram comprises:
judging whether a frequency band interval deviating from the preset central frequency point exists in the LMT curve spectrogram;
if yes, judging that the interference is interfered by the interference signal;
if not, judging that the interference signal does not interfere.
9. The method according to claim 1 or 8, wherein the base station communicates with a mobile terminal, the method further comprising:
determining a frequency band of the interfering signal and/or an interference degree of the interfering signal;
the step of determining the frequency band of the interference signal and the interference degree of the interference signal is specifically,
determining the frequency band interval; the frequency band of the interference signal is in the frequency band interval;
if the number of the frequency points deviated from the preset central frequency point in the frequency band interval is more, the interference degree is higher;
conversely, the lower the degree of interference experienced.
10. An interference positioning device is applied to a Base Band Unit (BBU) in a base station system, and is characterized in that the base station system is connected with a local maintenance terminal LMT through a network cable; the interference localization apparatus includes: the system comprises a physical layer module, a user plane module and an operation maintenance module; wherein the physical layer module comprises:
the data acquisition submodule is used for acquiring 5G air interface data in the current network scene;
the frequency spectrum analysis submodule is used for carrying out frequency spectrum analysis on the 5G air interface data to obtain frequency spectrum analysis data;
the user plane module comprises:
the parameter processing submodule is used for carrying out parameter calculation on the spectral analysis data to obtain spectral parameters;
the operation and maintenance module comprises:
the data transmission submodule is used for transmitting the frequency spectrum parameters to the LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters;
and the interference determining submodule is used for determining an interference signal according to the LMT curve spectrogram.
11. The apparatus of claim 10, wherein the operation and maintenance module further comprises:
the mode setting submodule is used for starting an NR air interface interception mode;
the data acquisition sub-module is specifically configured to,
and acquiring 5G air interface data when information is mutually transmitted between the base station system and the mobile terminal in the NR air interface interception mode.
12. The apparatus of claim 10 or 11, wherein the operation and maintenance module further comprises:
the interference avoidance submodule is used for configuring base station signal parameters for avoiding the interference signals; the base station signal parameters comprise a preset central frequency point and a base station system bandwidth.
13. The apparatus of claim 10, wherein the spectral analysis sub-module further comprises:
a data extraction unit, configured to extract time-domain data from the 5G air interface data;
and the frequency spectrum analysis unit is used for carrying out Fourier transform on the time domain data frame by frame to obtain frequency spectrum analysis data.
14. The apparatus of claim 10, 11 or 13, wherein the parameter processing submodule comprises:
the data cache unit is used for sending the frequency spectrum analysis data to a shared memory;
and the data calculation unit is used for calculating parameters aiming at the spectrum analysis data in the shared memory to obtain spectrum parameters.
15. The apparatus of claim 14, wherein the data computation submodule comprises:
a sampling point acquisition unit for acquiring sampling points;
the power calculation unit is used for calculating the relative power of the spectral analysis data in the shared memory according to the sampling points;
and the average conversion unit is used for averaging and converting the relative power to obtain the frequency spectrum parameter.
16. The apparatus according to claim 10 or 11 or 13 or 15, wherein the LMT is specifically configured to,
aiming at the frequency spectrum parameters, generating an LMT curve spectrogram by adopting a graphical display mode of receiving signal amplitude-frequency response; and displaying the LMT curve spectrogram.
17. The apparatus of claim 10, wherein the interference determination submodule comprises:
the interference judging unit is used for judging whether a frequency band interval deviating from the preset central frequency point exists in the displayed LMT curve spectrogram;
the first judging unit is used for judging that the LMT curve spectrogram has a frequency band interval deviating from the preset central frequency point, and judging that the LMT curve spectrogram is interfered by the interference signal;
and the second judging unit is used for judging that the LMT curve spectrogram is not interfered by the interference signal when the frequency band interval deviating from the preset central frequency point does not exist.
18. The apparatus of claim 10 or 17, wherein the operation and maintenance module further comprises:
an interference data determination submodule for determining a frequency band of the interference signal and/or an interference degree of the interference signal;
the interference data determination submodule is specifically configured to,
determining the frequency band interval; the frequency band of the interference signal is in the frequency band interval;
if the number of the frequency points deviated from the preset central frequency point in the frequency band interval is more, the interference degree is higher;
conversely, the lower the degree of interference experienced.
19. A distributed base station system, comprising:
the distributed base station system is connected with a local maintenance terminal LMT through a network cable; the base station system comprises a baseband processing unit (BBU); the BBU comprises an interference positioning device; the interference positioning device is used for acquiring 5G air interface data in the current network scene; performing spectrum analysis on the 5G air interface data to obtain spectrum analysis data; performing parameter calculation on the spectrum analysis data to obtain spectrum parameters; transmitting the spectrum parameters to an LMT; the LMT is used for generating and displaying an LMT curve spectrogram according to the frequency spectrum parameters; and determining an interference signal according to the LMT curve spectrogram.
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