CN113115352B - Interference source measuring method, device and base station - Google Patents
Interference source measuring method, device and base station Download PDFInfo
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- CN113115352B CN113115352B CN202110360626.3A CN202110360626A CN113115352B CN 113115352 B CN113115352 B CN 113115352B CN 202110360626 A CN202110360626 A CN 202110360626A CN 113115352 B CN113115352 B CN 113115352B
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Abstract
The invention discloses a method, a device and a base station for measuring an interference source, wherein the method comprises the following steps: determining configuration information of a measurement terminal and measurement resources for interference source measurement; sending the configuration information of the measurement resources to a measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resources to obtain signal power measurement information; acquiring signal power measurement information, and classifying the signal power measurement information to obtain classified signal power measurement information; and determining the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information. The scheme is favorable for closing the interference source, avoiding the influence of the interference source on signals, being favorable for the base station to effectively schedule wireless resources and avoiding the conflict with the interference source resources.
Description
Technical Field
The present invention relates to the field of information technologies, and in particular, to a method and an apparatus for measuring an interference source, and a base station.
Background
With the development of mobile communication technology, mobile communication standards have been developed from 1G (First Generation) to 5G (Fifth Generation). The 5G mobile communication technology has the advantages of large broadband, low time domain and high reliable wireless communication capability, and can meet the wireless access and various data transmission requirements of different terminals in intelligent manufacturing production.
In the 5G application process, signals can be interfered by other systems and complex electromagnetic environments in the environment. The interference source is measured, identified and positioned, so that the interference source can be closed, the influence of the interference source on the signal quality can be reduced, and the effective scheduling of base station resources can be facilitated.
Disclosure of Invention
The embodiment of the invention provides a method and a device for measuring an interference source and a base station, which can reduce the influence of the interference source on the signal quality.
In a first aspect, an embodiment of the present invention provides a method for measuring an interference source, including:
determining configuration information of a measurement terminal and measurement resources for interference source measurement;
sending the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information;
acquiring the signal power measurement information, and classifying the signal power measurement information to obtain classified signal power measurement information;
and determining the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
In an embodiment, the step of determining the location of the interference source and the actual interference signal power strength according to the classified signal power measurement information includes:
acquiring the signal power intensity measurement value and the coordinate value of the measurement terminal;
and determining the position of the interference source and the actual interference signal power strength according to the signal power strength measurement value and the coordinate value.
In an embodiment, the determining the configuration information of the measurement terminal and the measurement resource for the measurement of the interference source includes:
determining a measurement region according to the initial position of the measurement resource frequency domain and the initial position of the measurement resource time domain;
and selecting a terminal from the measuring area as the measuring terminal.
In an embodiment, the step of selecting a terminal from the measurement area as the measurement terminal includes:
selecting a terminal with a fixed position from the measurement area;
and taking the terminal with the fixed position as the measuring terminal.
In an embodiment, the step of selecting a terminal from the measurement area as the measurement terminal includes:
clustering the measurement areas to obtain a plurality of area clusters;
and optionally selecting a plurality of target terminals from the plurality of area clusters as the measurement terminals, wherein the plurality of target terminals are positioned in different area clusters.
In an embodiment, after the step of determining a measurement region according to the starting position of the measurement resource frequency domain and the starting position of the measurement resource time domain, the method further includes:
and carrying out the same configuration on preset interference measurement resources of the cell base station and the adjacent cell base station, so that the cell base station and the adjacent cell base station stop sending signals in the measurement area.
In an embodiment, the step of obtaining the signal power measurement information and classifying the signal power measurement information to obtain the classified signal power measurement information includes:
acquiring the time domain index and the frequency domain index;
and taking the signal power measurement information with the same time domain index and frequency domain index as the signal power measurement information of the same interference source.
In an embodiment, the step of obtaining the signal power measurement information and classifying the signal power measurement information to obtain the classified signal power measurement information includes:
acquiring the signal power measurement information, and determining whether the measurement intensity of the signal power is greater than a signal power intensity threshold value;
and when the signal power strength is greater than the signal power strength threshold value, classifying the signal power measurement information to obtain the classified signal power measurement information.
In a second aspect, an embodiment of the present invention further provides an apparatus for measuring an interference source, where the apparatus includes:
a first determining module, configured to determine configuration information of a measurement terminal and measurement resources for interference source measurement;
a sending module, configured to send the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information;
the classification module is used for acquiring the signal power measurement information and classifying the signal power measurement information to obtain classified signal power measurement information;
and the second determining module is used for determining the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
In one embodiment, the second determining module comprises:
the value acquisition submodule is used for acquiring the signal power strength measurement value and the coordinate value of the measurement terminal;
and the interference determining submodule is used for determining the position of an interference source and the actual interference signal power strength according to the signal power strength measured value and the coordinate value.
In one embodiment, the first determining module comprises:
the region determining submodule is used for determining a measuring region according to the initial position of the measuring resource frequency domain and the initial position of the measuring resource time domain;
and the selection submodule is used for selecting a terminal from the measurement area as the measurement terminal.
In one embodiment, the selection submodule is configured to:
selecting a terminal with a fixed position from the measurement area;
and taking the terminal with the fixed position as the measuring terminal.
In one embodiment, the selection submodule is configured to:
clustering the measurement areas to obtain a plurality of area clusters;
and optionally selecting a plurality of target terminals from the plurality of area clusters as the measurement terminals, wherein the plurality of target terminals are positioned in different area clusters.
In one embodiment, the measuring device of the interference source further includes:
a configuration module, configured to perform the same configuration on the preset interference measurement resources of the local cell base station and the neighboring cell base station, so that the local cell base station and the neighboring cell base station stop sending signals in the measurement area.
In one embodiment, the classification module comprises:
the index obtaining submodule is used for obtaining the time domain index and the frequency domain index;
and the classification submodule is used for taking the signal power measurement information with the same time domain index and frequency domain index as the signal power measurement information of the same interference source.
In one embodiment, the classification module comprises:
a threshold submodule for determining whether the measured strength of the signal power is greater than a signal power strength threshold;
and the classification submodule is used for classifying the signal power measurement information when the signal power strength is greater than the signal power strength threshold value to obtain the classified signal power measurement information.
In a third aspect, an embodiment of the present invention further provides a base station, including a processor and a memory, where the memory stores processor-executable instructions, and the processor performs the method for measuring an interference source as described above.
According to the interference source measuring method, the interference source measuring device and the base station, the configuration information of the measurement resource is sent to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain the signal power measurement information, then the signal power measurement information is classified, and finally the position of the interference source and the actual interference signal power strength are determined according to the classified signal power measurement information. The scheme not only ensures the normal operation of the 5G system by closing the interference source, but also is beneficial to dynamically adjusting the resource scheduling of the terminal near the interference source, and avoids the influence of the interference source on signals.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic view of a scene of a measurement system of an interference source according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of a method for measuring an interference source according to an embodiment of the present invention.
Fig. 3 is another schematic flow chart of a method for measuring an interference source according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a measuring apparatus of an interference source according to an embodiment of the present invention.
Fig. 5 is another schematic structural diagram of a measuring apparatus of an interference source according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiments of the present invention provide a system, a method, an apparatus, a base station and a computer-readable storage medium for measuring an interference source, which will be described in detail below.
Referring to fig. 1, fig. 1 is a schematic view of a scenario of a system for measuring an interference source according to an embodiment of the present invention. The system may include a base station and a measurement terminal. The measurement terminal specifically includes a measurement terminal 1, a measurement terminal 2, and a measurement terminal 3. The base station may be an LTE system or an evolved Node B (eNB) in the LTE system, a macro base station, a small base station, a pico base station, an access point, a transmission point, or a base station in a 5G network. The measuring terminal includes but is not limited to portable terminals such as mobile phones and tablets, fixed terminals such as computers and inquiring machines, various virtual terminals, and the like. The measurement terminal may communicate with one or more core networks via a Radio Access Network (RAN).
In the 5G system, interference sources such as WiFi and bluetooth cause interference to the terminal, and as shown in fig. 1, the interference may also cause interference to the measurement terminal 1, the measurement terminal 2, and the measurement terminal 3. In order to measure the interference source, the base station transmits configuration information of measurement resources to each of the measurement terminal 1, the measurement terminal 2, and the measurement terminal 3. After receiving the configuration information of the measurement resource, the measurement terminal 1, the measurement terminal 2, and the measurement terminal 3 measure the signal transmission power of the interference source. Specifically, the base station transmits a rrcreeconfiguration message to the measurement terminal through a PDSCH Channel (Physical Downlink Shared Channel). The RRCReconfiguration message has a CSI-ResourceConfig parameter, and the CSI-ResourceConfig parameter may be configured using configuration information of the measurement resource. After receiving the RRCREConfiguration message, the measurement terminal extracts the parameter configuration of the CSI-ResourceConfig from the RRCREConfiguration message, and can obtain the configuration information of the measurement resource. And then, the measuring terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information.
Next, as shown in fig. 1, the measurement terminal 2, and the measurement terminal 3 return signal power measurement information to the base station, respectively. Wherein the signal power measurement information includes a time domain index and a frequency domain index. And the base station uses the signal power measurement information with the same time domain index and frequency domain index as the signal power measurement information of the same interference source, so as to realize classification of the signal power measurement information and obtain the classified signal power measurement information.
And finally, the base station determines the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
In the embodiments of the present invention, the description will be made from the perspective of a measurement device of an interference source, which may be specifically integrated in a base station.
A method of interference source measurement, comprising: configuration information of measurement terminals and measurement resources for interference source measurement is determined. And sending the configuration information of the measurement resources to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resources to obtain the signal power measurement information. And acquiring signal power measurement information, and classifying the signal power measurement information to obtain the classified signal power measurement information. And determining the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
Referring to fig. 2, fig. 2 is a flowchart of a method for measuring an interference source according to an embodiment of the present invention, where the method includes:
step S101, determining configuration information of a measurement terminal and measurement resources for interference source measurement.
The configuration information of the measurement resources is used to instruct the measurement terminal how to configure the measurement resources, that is, the measurement terminal will perform interference measurement on the interference source according to the configured measurement resources. In one embodiment, the configuration information of the measurement resource includes: the Resource set identifies CSI-IM-Resource ID, the Resource identification CSI-IM-Resource, the initial position of a measurement Resource frequency domain and the initial position of a measurement Resource time domain. The types of measurement resources may be periodic, semi-persistent, and aperiodic, among others. It should be noted that, if the measurement resource is configured to be periodic or semi-persistent, the measurement resource period and the offset reported by the measurement terminal need to be further configured.
The start position of the measurement resource frequency domain and the start position of the measurement resource time domain define a measurement region, and a terminal satisfying a preset condition, such as a terminal with a fixed position, may be selected from the measurement region as a measurement terminal.
Step S102, sending the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain the signal power measurement information.
In an embodiment, the configuration information of the measurement resource is sent to the measurement terminal through a PDSCH channel, and a rrcreeconfiguration message is sent to the measurement terminal. The RRCReconfiguration message has a CSI-ResourceConfig parameter, and the CSI-ResourceConfig parameter may be configured using configuration information of the measurement resource. After receiving the RRCREConfiguration message, the measurement terminal extracts the parameter configuration of the CSI-ResourceConfig from the RRCREConfiguration message, and can obtain the configuration information of the measurement resource. And finally, the measuring terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information. Wherein the signal power measurement information includes a time domain index and a frequency domain index.
Step S103, obtaining signal power measurement information, and classifying the signal power measurement information to obtain the classified signal power measurement information.
After the signal power measurement information is obtained, a time domain index and a frequency domain index are extracted from the signal power measurement information, and the signal power measurement information with the same domain index and the same frequency domain index is used as the signal power measurement information corresponding to the same interference source.
And step S104, determining the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
Wherein the classified signal power measurement information comprises a signal power strength measurement value. And the signal power attenuation values of the interference source and the propagation path of the measuring terminal are in direct proportion to the square of the distance between the interference source and the propagation path of the measuring terminal, so that the coordinate value of the measuring terminal can be obtained, and the position coordinate of the interference source and the actual interference signal power strength can be determined by combining the signal power strength measured value.
The method for measuring the interference source of the embodiment of the invention firstly sends the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain the signal power measurement information, then classifies the signal power measurement information, and finally determines the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information. The scheme not only ensures the normal operation of the 5G system by closing the interference source, but also is beneficial to dynamically adjusting the resource scheduling of the terminal near the interference source, and avoids the influence of the interference source on signals.
In the embodiments of the present invention, the description will be made from the perspective of a measurement device of an interference source, which may be specifically integrated in a base station.
Referring to fig. 3, fig. 3 is a flowchart of a method for measuring an interference source according to an embodiment of the present invention, where the method includes:
step S201, determining configuration information of measurement resources for interference source measurement, where the configuration information of the measurement resources includes a start position of a measurement resource frequency domain and a start position of a measurement resource time domain.
The configuration information of the measurement resources is used to instruct the measurement terminal how to configure the measurement resources, that is, the measurement terminal will perform interference measurement on the interference source according to the configured measurement resources. In one embodiment, the configuration information of the measurement resource includes: the Resource set identifies CSI-IM-Resource ID, the Resource identification CSI-IM-Resource, the initial position of a measurement Resource frequency domain and the initial position of a measurement Resource time domain. The types of measurement resources may be periodic, semi-persistent, and aperiodic, among others. It should be noted that, if the measurement resource is configured to be periodic or semi-persistent, the measurement resource period and the offset reported by the measurement terminal need to be further configured.
Step S202, determining a measurement region according to the initial position of the measurement resource frequency domain and the initial position of the measurement resource time domain.
The starting position of the measurement resource frequency domain and the starting position of the measurement resource time domain correspond to a measurement resource region with a fixed size, so that a measurement region can be determined.
When the 5G system works, the terminal is often interfered by a complex electromagnetic environment, such as electromagnetic noise in industrial production and shielding, reflection and the like of equipment. The 5G-U communication technology is a 5G communication technology in an unlicensed frequency band, and when a 5G-U system operates in the unlicensed frequency band, the 5G-U system is affected by heterogeneous protocols of an unlicensed frequency channel and is interfered by an inter-system. In an embodiment, in order to accurately locate the inter-system interference source, the cell base station and the neighboring cell base station may stop sending signals in the measurement area. Therefore, after the step of determining the measurement region according to the starting position of the measurement resource frequency domain and the starting position of the measurement resource time domain, the method may further include: and carrying out the same configuration on the preset interference measurement resources of the base station of the cell and the base station of the adjacent cell, so that the cell and the adjacent cell stop sending signals in the measurement region. The preset interference measurement resource comprises offsets periodicityAndOffset, reqBand, CSI-IM-ResourceElementPattern Pattern, a time domain starting position, a frequency domain starting position and the like.
In step S203, a terminal is selected from the measurement area as a measurement terminal.
There are a plurality of terminals in the measurement area, and a detailed procedure of selecting a terminal from the measurement area as a measurement terminal will be described next. In an embodiment, the measurement terminal may be selected as follows:
(A1) a terminal having a fixed position is selected from the measurement area.
(A2) A terminal having a fixed position is used as the measurement terminal.
Since the signal transmitted by the interference source attenuates as the propagation path increases, when the measurement terminal measures the signal transmission power of the interference source, the attenuated signal transmission power is measured. When the measuring terminal has a fixed position, the distance between the measuring terminal and the interference source is unchanged, so the measured attenuated signal transmission power is stable, and the stability of subsequent signal power measurement information can be improved. For example, the position of a large enclosure in a factory area is often fixed, and the large enclosure may be set as a measurement terminal.
In an embodiment, the following method may be further adopted to select a terminal from the measurement area as the measurement terminal:
(B1) and clustering the measurement areas to obtain a plurality of area clusters.
(B2) And optionally selecting a plurality of target terminals from the plurality of area clusters as the measurement terminals, wherein the plurality of target terminals are positioned in different area clusters.
Specifically, the measurement region is divided into n region clusters, wherein n is more than or equal to 3, and n is a positive integer. And selecting m target terminals from the n area clusters as measurement terminals, wherein n is more than or equal to m and more than or equal to 3, and m is a positive integer. Because each target terminal is positioned in different area clusters, the subsequent measured signal power measurement information is more accurate by increasing the diversity of the measurement terminals.
Step S204, sending the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information, wherein the signal power measurement information comprises the measurement intensity of the signal power.
In an embodiment, the configuration information of the measurement resource is sent to the measurement terminal through a PDSCH channel, and a rrcreeconfiguration message is sent to the measurement terminal. The RRCReconfiguration message has a CSI-ResourceConfig parameter, and the CSI-ResourceConfig parameter may be configured using configuration information of the measurement resource. After receiving the RRCREConfiguration message, the measurement terminal extracts the parameter configuration of the CSI-ResourceConfig from the RRCREConfiguration message, and can obtain the configuration information of the measurement resource. And finally, the measuring terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information.
The signal power measurement information includes measurement intensity of signal power, a measurement terminal index, a time domain index and a frequency domain index. The measured strength of each signal power corresponds to a set of measured terminal index, time domain index and frequency domain index. In particular, assume that the measured strength of the signal power is Pi,l,kThen i is the measurement terminal index, l is the time domain index, and k is the frequency domain index.
Step S205, acquiring signal power measurement information, and determining whether the measurement strength of the signal power is greater than a signal power strength threshold.
In an embodiment, the measurement terminal reports the signal power measurement information through a CSI Report message, where the CSI Report message carries the signal power measurement information. It should be noted that the measurement terminal may use a PUCCH Channel (Physical Uplink Control Channel) or may use a PUSCH Channel (Physical Uplink Shared Channel) to send the CSI Report message.
After receiving the signal power measurement information reported by the measurement terminal, extracting the measurement intensity of the signal power from the signal power measurement information, and judging the effectiveness of the signal power measurement intensity. Specifically, a signal power strength threshold is preset, and when the measurement strength of the signal power is greater than the signal power strength threshold, it indicates that the measurement terminal detects the existence of the interference source, that is, the signal power measurement information is valid. When the measured strength of the signal is not greater than the signal power strength threshold, it indicates that the measuring terminal does not detect the interference source, i.e. the signal power measurement information is invalid.
Step S206, when the signal power strength is larger than the signal power strength threshold value, classifying the signal power measurement information to obtain classified signal power measurement information, wherein the classified signal power measurement information comprises a signal power strength measured value.
For example, for signal power measurement information Pi,l,kWhen the values of the time domain index l and the frequency domain index k are the same, the signal power measurement information P may be converted into the signal power measurement informationi,l,kAnd measuring information for signal power corresponding to the same interference source.
It should be noted that, according to the sequence of step S205 and step S206, the validity of the signal power measurement information may be detected first and then the valid signal power measurement information is classified, or the signal power measurement information may be classified first and then the validity of the classified signal power measurement information is detected. In the embodiment of the present invention, the classification step and the validity detection step are not specifically limited.
Step S207, obtaining a signal power strength measurement value and a coordinate value of the measurement terminal; and determining the position of the interference source and the actual interference signal power strength according to the signal power strength measurement value and the coordinate value.
Research shows that the signal power attenuation values of the interference source and the propagation path of the measuring terminal are in direct proportion to the square of the distance between the interference source and the propagation path of the measuring terminal, namely delta P ∞ d2And d is the linear distance between the interference source and the propagation path of the measuring terminal. Assuming that the coordinate value of the interference source is (X, Y) and the coordinate value of the measurement terminal is (X, Y), then
The actual interference signal power strength of the signal emitted by the interference source is P, the measured value of the signal power strength measured by the measuring terminal is P, and then Δ P is P-P. Furthermore, since the numerical relationship between the power attenuation value Δ P and the linear distance d is related to the electromagnetic propagation environment model of the plant, the functional relationship f can be obtained by fitting a large number of actual plant electromagnetic environment measurements. In summary, the equation of the relation between the power attenuation Δ P and the linear distance d is obtained as f (P-P) ═ P(x-X)2+(y-Y)2。
Specifically, assume that there are i measurement terminals measuring the signal power strength measurement value of the signal at the same interference source, where i ≧ 3, and i is a positive integer. That is, at least 3 measuring terminals detect the signal power intensity of the same interference source, and coordinate values (X) of at least three groups of measuring terminals can be obtained1，Y1)、(X2，Y2) And (X)3，Y3) And three corresponding sets of signal power strength measurements P1、P2And P3Substituting the three groups of values into the above equation (f (P-P) ═ X-X)2+(y-Y)2The coordinate values of the interference source and the actual interference signal power strength p of the signal emitted by the interference source can be obtained.
It should be noted that the coordinate value of the measurement terminal may be obtained by a pre-measurement method, and the coordinate value of the measurement terminal may also be measured by a positioning method, such as a positioning method for multiple multipath arrival angles of the terminal and a positioning method for measuring a time difference of arrival of the terminal based on a prs (positioning reference signal).
The interference measurement method of the embodiment of the invention firstly sends the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain the signal power measurement information, then classifies the signal power measurement information, and finally determines the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information. The scheme not only ensures the normal operation of the 5G system by closing the interference source, but also is beneficial to dynamically adjusting the resource scheduling of the terminal near the interference source, and avoids the influence of the interference source on signals.
The present embodiment will be further described from the perspective of a measuring device of an interference source, which may be integrated in a base station, according to the method described in the above embodiment.
Referring to fig. 4 and 5, fig. 4 and 5 are structural diagrams of a measuring apparatus of an interference source according to an embodiment of the present invention. As shown in fig. 4, the measuring apparatus 30 of the interference source includes a first determining module 301, a sending module 302, a classifying module 303, and a second determining module 304.
(1) First determining module 301
The first determining module 301 is configured to determine configuration information of a measurement terminal and measurement resources for interference source measurement. The configuration information of the measurement resources is used to instruct the measurement terminal how to configure the measurement resources, that is, the measurement terminal performs interference measurement on the interference source according to the configured measurement resources. In one embodiment, the configuration information of the measurement resource includes: the Resource set identifies CSI-IM-Resource ID, the Resource identification CSI-IM-Resource, the initial position of a measurement Resource frequency domain and the initial position of a measurement Resource time domain. The types of measurement resources may be periodic, semi-persistent, and aperiodic, among others. It should be noted that, if the measurement resource is configured to be periodic or semi-persistent, the first determining module 301 further configures a measurement resource period and an offset reported by the measurement terminal.
In one embodiment, the first determination module 301 includes a region determination sub-module 3011 and a selection sub-module 3012. The region determining sub-module 3011 is configured to determine a measurement region according to a start position of a measurement resource frequency domain and a start position of a measurement resource time domain. The selecting submodule 3012 is configured to select a terminal from the measurement area as a measurement terminal. The start position of the measurement resource frequency domain and the start position of the measurement resource time domain correspond to a measurement resource region having a fixed size, i.e., the region determining sub-module 3011 may determine a measurement region.
In one embodiment, the selection submodule 3012 is used to: selecting a terminal with a fixed position from a measurement area; a terminal having a fixed position is used as the measurement terminal. Since the signal transmitted by the interference source attenuates as the propagation path increases, when the measurement terminal measures the signal transmission power of the interference source, the attenuated signal transmission power is measured. When the measuring terminal has a fixed position, the distance between the measuring terminal and the interference source is unchanged, so the measured attenuated signal transmission power is stable, and the stability of subsequent signal power measurement information can be improved. For example, the position of a large enclosure in a factory area is often fixed, and the large enclosure may be set as a measurement terminal.
In one embodiment, the selection submodule 3012 is used to: clustering the measurement areas to obtain a plurality of area clusters; and optionally selecting a plurality of target terminals from the plurality of area clusters as the measurement terminals, wherein the plurality of target terminals are positioned in different area clusters. Specifically, the measurement region is divided into n region clusters, wherein n is more than or equal to 3, and n is a positive integer. And selecting m target terminals from the n area clusters as measurement terminals, wherein n is more than or equal to m and more than or equal to 3, and m is a positive integer. Because each target terminal is positioned in different area clusters, the subsequent measured signal power measurement information is more accurate by increasing the diversity of the measurement terminals.
In an embodiment, the measuring device 30 of the interference source further comprises a configuration module 305. The configuration module 305 is configured to perform the same configuration on the preset interference measurement resources of the local cell base station and the neighboring cell base station, so that the local cell base station and the neighboring cell base station stop sending signals in the measurement area.
When the 5G system works, the terminal is often interfered by a complex electromagnetic environment, such as electromagnetic noise in industrial production and shielding, reflection and the like of equipment. The 5G-U communication technology is a 5G communication technology in an unlicensed frequency band, and when a 5G-U system operates in the unlicensed frequency band, the 5G-U system is affected by heterogeneous protocols of an unlicensed frequency channel and is interfered by an inter-system. In an embodiment, in order to accurately locate the inter-system interference source, the configuration module 305 may perform the same configuration on preset interference measurement resources of the base station of the cell and the base station of the neighboring cell, so that the cell and the neighboring cell stop sending signals in the measurement area. The preset interference measurement resource comprises offsets periodicityAndOffset, reqBand, CSI-IM-ResourceElementPattern Pattern, a time domain starting position, a frequency domain starting position and the like.
(2) Sending module 302
The sending module 302 is configured to send the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information.
In an embodiment, the sending module 302 sends the configuration information of the measurement resource to the measurement terminal through a PDSCH channel, and sends a rrcreeconfiguration message. The RRCReconfiguration message has a CSI-ResourceConfig parameter, and the CSI-ResourceConfig parameter may be configured using configuration information of the measurement resource. After receiving the RRCREConfiguration message, the measurement terminal extracts the parameter configuration of the CSI-ResourceConfig from the RRCREConfiguration message, and can obtain the configuration information of the measurement resource. And finally, the measuring terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information.
The signal power measurement information includes measurement intensity of signal power, a measurement terminal index, a time domain index and a frequency domain index. The measured strength of each signal power corresponds to a set of measured terminal index, time domain index and frequency domain index. In particular, assume that the measured strength of the signal power is Pi,l,kThen i is the measurement terminal index, l is the time domain index, and k is the frequency domain index.
(3) Classification Module 303
The classification module 303 is configured to obtain signal power measurement information, and classify the signal power measurement information to obtain classified signal power measurement information. In an embodiment, the measurement terminal reports the signal power measurement information through a CSI Report message, where the CSI Report message carries the signal power measurement information. It should be noted that the measurement terminal may use a PUCCH Channel (Physical Uplink Control Channel) or may use a PUSCH Channel (Physical Uplink Shared Channel) to send the CSI Report message.
In one embodiment, the classification module 303 includes: an index acquisition submodule 3031 and a classification submodule 3032. The index obtaining sub-module 3031 is configured to obtain a time domain index and a frequency domain index. The classifying submodule 3032 is configured to use the signal power measurement information with the same time domain index and frequency domain index as the signal power measurement information of the same interference source. For example, for signal power measurement information Pi,l,kThe classification submodule 3032 may measure the signal power when the values of the time-domain index l and the frequency-domain index k are the sameQuantity information Pi,l,kAnd measuring information for signal power corresponding to the same interference source.
In one embodiment, the classification module 303 includes: a threshold submodule 3033 and a classification submodule 3034. The threshold submodule 3033 is configured to obtain signal power measurement information and determine whether the measured strength of the signal power is greater than a signal power strength threshold. The classification submodule 3034 is configured to classify the signal power measurement information when the signal power strength is greater than the signal power strength threshold, so as to obtain classified signal power measurement information.
After receiving the signal power measurement information reported by the measurement terminal, the threshold submodule 3033 extracts the measurement intensity of the signal power from the signal power measurement information, and judges the validity of the signal power. Specifically, a signal power strength threshold is preset, and when the threshold submodule 3033 determines that the measured strength of the signal power is greater than the signal power strength threshold, it indicates that the measurement terminal detects the existence of the interference source, that is, the signal power measurement information is valid. When the threshold submodule 3033 determines that the measured strength of the signal is not greater than the signal power strength threshold, it indicates that the measurement terminal does not detect the interference source, i.e. the signal power measurement information is invalid.
(4) Second determination module 304
The second determining module 304 is configured to determine the location of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
In one embodiment, the second determining module 304 includes: a value acquisition sub-module 3041 and an interference determination sub-module 3042. The value obtaining submodule 3041 is configured to obtain a signal power strength measurement value and a coordinate value of the measurement terminal. The interference determining submodule 3042 is configured to determine the location of the interference source and the actual interference signal power strength according to the signal power strength measurement value and the coordinate value.
Research shows that the signal power attenuation values of the interference source and the propagation path of the measuring terminal are in direct proportion to the square of the distance between the interference source and the propagation path of the measuring terminal, namely delta P ∞ d2And d is the linear distance between the interference source and the propagation path of the measuring terminal. Assuming that the coordinate value of the interference source is (x, y), and measuring the resultThe coordinate value of the end is (X, Y), then
The actual interference signal power strength of the signal emitted by the interference source is P, the measured value of the signal power strength measured by the measuring terminal is P, and then Δ P is P-P. Furthermore, since the numerical relationship between the power attenuation value Δ P and the linear distance d is related to the electromagnetic propagation environment model of the plant, the functional relationship f can be obtained by fitting a large number of actual plant electromagnetic environment measurements. In summary, the equation of the relationship between the power attenuation Δ P and the linear distance d can be obtained as f (P-P) ═ X-X2+(y-Y)2。
Specifically, assume that there are i measurement terminals measuring the signal power strength measurement value of the signal at the same interference source, where i ≧ 3, and i is a positive integer. That is, at least 3 measuring terminals detect the signal power strength of the same interference source, and the value obtaining sub-module 3041 may obtain the coordinate values (X) of at least three sets of measuring terminals1，Y1)、(X2，Y2) And (X)3，Y3) And three corresponding sets of signal power strength measurements P1、P2And P3The interference determination sub-module 3042 substitutes the three sets of values into the above equation f (P-P) ═ X-X)2+(y-Y)2The coordinate values of the interference source and the actual interference signal power strength p of the signal emitted by the interference source can be obtained.
It should be noted that the value obtaining sub-module 3041 may obtain the coordinate value of the measurement terminal by using a pre-measurement method, and may also measure the coordinate value of the measurement terminal by using a positioning method, such as a positioning method for multiple multipath arrival angles of the terminal and a positioning method for measuring the time difference of arrival of the terminal based on the PRS reference signal.
The interference source measuring device of the embodiment of the invention firstly sends the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain the signal power measurement information, then classifies the signal power measurement information, and finally determines the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information. The interference source is closed, normal operation of the 5G system is guaranteed, resource scheduling of a terminal near the interference source is dynamically adjusted, and signals are prevented from being affected by the interference source.
The embodiment of the invention also provides a base station. The base station may include one or more processors of the processing core, one or more memories of the computer readable storage medium.
The processor is the control center of the base station, connects each part of the whole base station by various interfaces and lines, and executes various functions and processes data of the base station by operating or executing software programs and/or modules stored in the memory and calling the data stored in the memory, thereby performing overall monitoring of the base station.
The memory may be used to store software programs and modules, and the processor may execute various functional applications and data processing by operating the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area.
Specifically, in this embodiment, the processor in the base station loads the executable file corresponding to the process of one or more application programs into the memory according to the following instructions, and the processor runs the application programs stored in the memory, thereby implementing various functions as follows:
configuration information of measurement terminals and measurement resources for interference source measurement is determined. And sending the configuration information of the measurement resources to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resources to obtain the signal power measurement information. And acquiring signal power measurement information, and classifying the signal power measurement information to obtain the classified signal power measurement information. And determining the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information.
The base station of the embodiment of the invention firstly sends the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain the signal power measurement information, then classifies the signal power measurement information, and finally determines the position of the interference source and the actual interference signal power strength according to the classified signal power measurement information. The interference source is closed, normal operation of the 5G system is guaranteed, resource scheduling of a terminal near the interference source is dynamically adjusted, and signals are prevented from being affected by the interference source.
Various operations of embodiments are provided herein. In one embodiment, the one or more operations may constitute computer readable instructions stored on one or more computer readable media, which when executed by a base station, will cause a computing device to perform the operations. The order in which some or all of the operations are described should not be construed as to imply that these operations are necessarily order dependent. Those skilled in the art will appreciate alternative orderings having the benefit of this description. Moreover, it should be understood that not all operations are necessarily present in each embodiment provided herein.
Also, although the disclosure has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present disclosure includes all such modifications and alterations, and is limited only by the scope of the appended claims. In particular regard to the various functions performed by the above described components (e.g., elements, resources, etc.), the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the disclosure. In addition, while a particular feature of the disclosure may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for a given or particular application. Furthermore, to the extent that the terms "includes," has, "" contains, "or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising.
Each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Each apparatus or system described above may perform the method in the corresponding method embodiment.
In summary, although the present invention has been disclosed in the foregoing embodiments, the serial numbers before the embodiments are used for convenience of description only, and the sequence of the embodiments of the present invention is not limited. Furthermore, the above embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be limited by the appended claims.
Claims (7)
1. A method for measuring an interference source, comprising:
determining configuration information of a measurement terminal and measurement resources for interference source measurement;
sending the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information;
acquiring the signal power measurement information, and classifying the signal power measurement information to obtain classified signal power measurement information;
determining the position of an interference source and the actual interference signal power strength according to the classified signal power measurement information,
the signal power measurement information comprises the measurement intensity of signal power, the step of obtaining the signal power measurement information and classifying the signal power measurement information to obtain the classified signal power measurement information comprises the following steps: acquiring the signal power measurement information, and determining whether the measurement intensity of the signal power is greater than a signal power intensity threshold value; when the signal power strength is larger than the signal power strength threshold value, the signal power measurement information is classified to obtain the classified signal power measurement information,
wherein, the configuration information of the measurement resource includes an initial position of a measurement resource frequency domain and an initial position of a measurement resource time domain, and the step of determining the configuration information of the measurement terminal and the measurement resource for the interference source measurement includes: determining a measurement region according to the initial position of the measurement resource frequency domain and the initial position of the measurement resource time domain; selecting a terminal from the measurement area as the measurement terminal,
after the step of determining the measurement region according to the starting position of the measurement resource frequency domain and the starting position of the measurement resource time domain, the method further includes: and carrying out the same configuration on preset interference measurement resources of the cell base station and the adjacent cell base station, so that the cell base station and the adjacent cell base station stop sending signals in the measurement area.
2. The method of claim 1, wherein the classified signal power measurement information comprises a signal power strength measurement value, and wherein the step of determining the location of the interferer and the actual interfering signal power strength based on the classified signal power measurement information comprises:
acquiring the signal power intensity measurement value and the coordinate value of the measurement terminal;
and determining the position of the interference source and the actual interference signal power strength according to the signal power strength measurement value and the coordinate value.
3. The method according to claim 1, wherein the step of selecting a terminal from the measurement area as the measurement terminal comprises:
selecting a terminal with a fixed position from the measurement area;
and taking the terminal with the fixed position as the measuring terminal.
4. The method according to claim 1, wherein the step of selecting a terminal from the measurement area as the measurement terminal comprises:
clustering the measurement areas to obtain a plurality of area clusters;
and optionally selecting a plurality of target terminals from the plurality of area clusters as the measurement terminals, wherein the plurality of target terminals are positioned in different area clusters.
5. The method of claim 1, wherein the signal power measurement information includes a time domain index and a frequency domain index, and the step of obtaining the signal power measurement information and classifying the signal power measurement information to obtain the classified signal power measurement information comprises:
acquiring the time domain index and the frequency domain index;
and taking the signal power measurement information with the same time domain index and frequency domain index as the signal power measurement information of the same interference source.
6. An interference source measuring apparatus, comprising:
a first determining module, configured to determine configuration information of a measurement terminal and measurement resources for interference source measurement;
a sending module, configured to send the configuration information of the measurement resource to the measurement terminal, so that the measurement terminal measures the signal sending power of the interference source according to the configuration information of the measurement resource to obtain signal power measurement information;
the classification module is used for acquiring the signal power measurement information and classifying the signal power measurement information to obtain classified signal power measurement information;
a second determining module, configured to determine a location of an interference source and an actual interference signal power strength according to the classified signal power measurement information,
the signal power measurement information comprises the measurement intensity of signal power, and whether the measurement intensity of the signal power is greater than a signal power intensity threshold value is determined by acquiring the signal power measurement information; when the signal power strength is larger than the signal power strength threshold value, the signal power measurement information is classified to obtain the classified signal power measurement information,
determining a measurement region according to the initial position of the measurement resource frequency domain and the initial position of the measurement resource time domain; and selecting a terminal from the measurement area as the measurement terminal, and performing the same configuration on preset interference measurement resources of the cell base station and the adjacent cell base station to enable the cell base station and the adjacent cell base station to stop sending signals in the measurement area.
7. A base station comprising a processor and a memory, the memory having stored therein processor-executable instructions, the processor providing the method of interference source measurement according to any one of claims 1 to 5 by executing the instructions.
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