CN111988790B - Intermodulation interference processing method and device, electronic equipment and readable storage medium - Google Patents

Intermodulation interference processing method and device, electronic equipment and readable storage medium Download PDF

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CN111988790B
CN111988790B CN202010884469.1A CN202010884469A CN111988790B CN 111988790 B CN111988790 B CN 111988790B CN 202010884469 A CN202010884469 A CN 202010884469A CN 111988790 B CN111988790 B CN 111988790B
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intermodulation
subcarrier
interference
target
intensity
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CN111988790A (en
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张伟勤
肖智
罗忠威
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China Tower Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a processing method and a processing device of intermodulation interference, electronic equipment and a readable storage medium, wherein the processing method comprises the following steps: determining a first intermodulation interference strength of intermodulation subcarrier combinations to a first subcarrier in an indoor distribution system; wherein the intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; the intermodulation signal falls into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of a target access system; determining a target intermodulation interference intensity of the target access system according to the first intermodulation interference intensity; and determining the average interference intensity of the target access system according to the target intermodulation interference intensity, wherein the average interference intensity is the interference intensity received in a unit bandwidth. According to the method and the device, the problem that in the prior art, the specific influence degree cannot be estimated due to qualitative research adopted in research on indoor intermodulation interference is solved.

Description

Intermodulation interference processing method and device, electronic equipment and readable storage medium
Technical Field
The present invention relates to the field of communications, and in particular, to a method and apparatus for processing intermodulation interference, an electronic device, and a readable storage medium.
Background
With the development of wireless communication technology, the co-building sharing phenomenon of the same site 2/3/4/5G and multiple operators is more and more common, and passive intermodulation has become a main cause of indoor interference. Therefore, before the indoor distribution system planning construction, it is more and more important to perform interference analysis and planning on the access network in advance. At present, qualitative research is adopted in research on indoor intermodulation interference, namely, the possibility of interference of some systems can be estimated, but the specific influence degree on some systems cannot be estimated.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method and an apparatus for processing intermodulation interference, an electronic device, and a readable storage medium, so as to solve the problem that in the prior art, a qualitative study is adopted for studying indoor intermodulation interference, so that a specific influence degree cannot be estimated.
In a first aspect, a method for processing intermodulation interference includes: determining a first intermodulation interference strength of intermodulation subcarrier combinations to a first subcarrier in an indoor distribution system; wherein the intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; the intermodulation signal falls into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of a target access system; determining a target intermodulation interference intensity of the target access system according to the first intermodulation interference intensity; and determining the average interference intensity of the target access system according to the target intermodulation interference intensity, wherein the average interference intensity is the interference intensity received in a unit bandwidth.
In a second aspect, an apparatus for processing intermodulation interference includes: a first determining module, configured to determine a first intermodulation interference strength of an intermodulation subcarrier combination to a first subcarrier in the indoor distribution system; wherein the intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; the intermodulation signal falls into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of a target access system; a second determining module, configured to determine a target intermodulation interference strength of the target access system according to the first intermodulation interference strength; and a third determining module, configured to determine an average interference strength of the target access system according to the target intermodulation interference strength, where the average interference strength is an interference strength received in a unit bandwidth.
In a third aspect, there is provided an electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method as described in the first aspect.
In a fourth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method as described in the first aspect.
In the embodiment of the application, the first intermodulation interference intensity of the inter-modulation subcarrier combination on the first subcarrier is determined, the target intermodulation interference intensity of the target access system is further determined, and finally the average interference intensity of the target access system is determined.
Drawings
Fig. 1 is a flowchart of a method for processing intermodulation interference according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an apparatus for processing intermodulation interference according to an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
An embodiment of the present application provides a method for processing intermodulation interference, and fig. 1 is a flowchart of a method for processing intermodulation interference in the embodiment of the present application, as shown in fig. 1, where steps of the method include:
step S102, determining first intermodulation interference intensity of intermodulation subcarrier combination to a first subcarrier in an indoor distribution system; wherein the intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; intermodulation signals fall into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of the target access system;
it should be noted that, two subcarriers in the intermodulation subcarrier combination may be divided into two of N subcarriers by a certain signal. Thus, the first subcarrier may be a subcarrier in which another one of the N subcarriers is acted upon by the intermodulation subcarrier combination. Of course, other intermodulation subcarrier combinations may exist in the N subcarriers, and the subcarriers used for other intermodulation subcarrier combinations may be subcarriers in the intermodulation subcarrier combination or may be separate subcarriers.
In addition, the frequency band of the first subcarrier belongs to the frequency band of the target access system, that is, the interference intensity obtained subsequently is the interference intensity of the target access system.
Step S104, determining target intermodulation interference intensity of a target access system according to the first intermodulation interference intensity;
and step S106, determining the average interference intensity of the target access system according to the target intermodulation interference intensity, wherein the average interference intensity is the interference intensity received in the unit bandwidth.
Through the steps S102 to S106, the first intermodulation interference intensity of the intermodulation subcarrier combination to the first subcarrier is determined, the target intermodulation interference intensity of the target access system is further determined, and finally the average interference intensity of the target access system is determined.
The determining the first intermodulation interference strength of the intermodulation subcarrier combination to the first subcarrier in the intra-distributed system in step S102 in the embodiment of the present application may further include:
step S102-11, traversing intermodulation subcarrier combinations in an indoor distribution system;
it should be noted that there may be multiple intermodulation subcarrier combinations in the indoor distribution system, so each subcarrier combination needs to be traversed.
Step S102-12, determining a first intermodulation subcarrier combination from the traversed intermodulation subcarrier combination, wherein intermodulation signals of the first intermodulation subcarrier combination fall into a receiving frequency band of the first subcarrier;
step S102-13, determining that the intermodulation signal of the first intermodulation subcarrier combination falls into the receiving frequency band width of the first subcarrier as the first intermodulation interference intensity.
For the steps S102-11 to S102-13, the intermodulation combination of the first subcarrier is set as the intermodulation subcarrier combination in the ith in the specific application scenario, so that the bandwidth of the intermodulation signal generated by the intermodulation combination is B PIM (i) The system bandwidth is BW, if B PIM (i) The presence of an intersection with BW indicates a subcarrier wave hit in the intersection, the intensity of the intersection hit being:
P(i)＝[B PIM (i)∩BW]*Ir MHz (i)
wherein, the intensity generated by each intermodulation combination is 1 unit, and the intermodulation bandwidth is B PIM Average interference intensity Ir per MHz of intermodulation signal MHz The method comprises the following steps: ir (Ir) MHz ＝1/B PIM 。
Adding all the combinations with the BW intersection sets, the interference intensity in the full bandwidth is obtained as follows:
P BW ＝∑P(i)
in an optional implementation manner of the embodiment of the present application, in a case where the first intermodulation subcarriers are combined into a plurality of first intermodulation subcarriers, the determining, according to the first intermodulation interference strength, the target intermodulation interference strength of the target access system in step S104 may further include: and accumulating the first intermodulation interference intensities corresponding to the first intermodulation subcarrier combinations, and taking the accumulated sum as the target intermodulation interference intensity.
In an optional implementation manner of the embodiment of the present application, in a case where the first intermodulation subcarriers are combined into a plurality of first intermodulation subcarriers, the determining, according to the first intermodulation interference strength, the target intermodulation interference strength of the target access system in step S104 may further include: and carrying out weighted accumulation on a plurality of first intermodulation interference intensities corresponding to the plurality of first intermodulation subcarrier combinations, and taking the weighted accumulation sum as a target intermodulation interference intensity, wherein each first intermodulation subcarrier combination corresponds to a preset weight.
It can be seen that, in the embodiment of the present application, the target intermodulation interference intensity may be obtained by directly accumulating the plurality of first intermodulation interference intensities, or may be obtained by performing weighted accumulation on the plurality of first intermodulation interference intensities. The weighting accumulation mode can distinguish different first intermodulation interference intensities, namely, one or more intermodulation interference intensities can be highlighted or one or more intermodulation interference intensities can be weakened in a targeted manner under certain application scenes, and corresponding adjustment can be carried out according to actual conditions.
In an optional implementation manner of the embodiment of the present application, in a case that there are a plurality of target access systems in the indoor distribution system, the method of the embodiment of the present application may further include: and comparing the interference degrees suffered by the target access systems according to the average interference intensity of the target access systems.
After the average interference intensity is obtained, the interference degrees suffered by the multiple target access systems can be compared, so that the multiple target access systems can be quantitatively compared and analyzed.
It should be noted that, in the indoor distribution system in the embodiment of the present application, the power of each subcarrier is the same.
The present application is exemplified below in conjunction with the detailed description of the examples of the present application;
the specific embodiment of the application provides a quantitative analysis method for passive intermodulation interference of indoor distributed public network communication, which comprises the following steps: the signal is equivalent to N subcarrier signals, the signal intensity of the carriers is equal, the intermodulation process is equivalent to the interaction of two subcarriers with the same power, and under the condition that the nonlinear factor of the system is unchanged, the intermodulation signals generated by the action of the carriers are also equal. Defining that a certain intermodulation signal just falls into an uplink frequency band of a certain carrier, and considering that the carrier is intermodulation hit, wherein the intermodulation signal falls into a width B of the uplink frequency band PIM And performing intermodulation traversal combination on all the systems for the hit intensity, and adding the hit intensities each time to obtain the intermodulation interference intensity of BW in the uplink bandwidth of the system.
The specific method comprises the following steps:
step S201, calculating the intensity of intermodulation signals per MHz;
wherein, assuming that each intermodulation combination produces an intensity of 1 unit, the intermodulation bandwidth is B PIM Average interference intensity Ir per MHz of intermodulation signal MHz The method comprises the following steps:
Ir MHz ＝1/B PIM (1)
step S202, calculating the hit times and the hit intensity of equivalent subcarriers in the system bandwidth;
wherein if the bandwidth of intermodulation signals generated by the ith intermodulation combination is B PIM (i) The system bandwidth is BW, if B PIM (i) The presence of an intersection with BW indicates a subcarrier wave hit in the intersection, the intensity of the intersection hit being:
P(i)＝[B PIM (i)∩BW]*Ir MHz (i) (2)
adding all the combinations with the BW intersection sets to obtain the interference intensity in the full band:
P BW ＝∑P(i) (3)
step S204, calculating the average interference intensity per MHz of the receiver;
No MHZ ＝P BW /BW (4)
wherein, by comparing the interference intensity received by each system unit bandwidth (per MHz), the degree to which all access networks may be affected can be estimated.
According to the embodiment of the application, the access system is subjected to full-quantity permutation and combination to obtain all interference combination conditions of a certain system, then the standards are unified, the uplink interference intensity of each combination is analyzed and accumulated to obtain the interference intensity in the full bandwidth, finally the influence degree on the system is evaluated through intermodulation intensity of each system unit bandwidth (per MHz), qualitative and quantitative analysis on the access system can be achieved, planning of the access network is guided, and the method has high engineering practical value.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
Fig. 2 is a schematic structural diagram of an apparatus for processing intermodulation interference according to an embodiment of the present application, as shown in fig. 2, where the apparatus includes:
a first determining module 22, configured to determine a first intermodulation interference strength of an intermodulation subcarrier combination to a first subcarrier in the indoor distribution system; wherein the intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; intermodulation signals fall into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of the target access system;
a second determining module 24, configured to determine a target intermodulation interference strength of the target access system according to the first intermodulation interference strength;
a third determining module 26 is configured to determine an average interference strength of the target access system according to the target intermodulation interference strength, where the average interference strength is an interference strength received in a unit bandwidth.
Optionally, the first determining module 22 in the embodiment of the present application may further include: the traversing unit is used for traversing intermodulation subcarrier combinations in the indoor distribution system; the first determining unit is used for determining a first intermodulation subcarrier combination from the traversed intermodulation subcarrier combination, wherein intermodulation signals of the first intermodulation subcarrier combination fall into a receiving frequency band of the first subcarrier; and the second determining unit is used for determining that the receiving frequency band width of the intermodulation signal of the first intermodulation subcarrier combination falling into the first subcarrier is the first intermodulation interference intensity.
Optionally, in the case that the first intermodulation subcarrier combination is multiple, the second determining module 24 in the embodiment of the present application is further configured to accumulate a plurality of first intermodulation interference intensities corresponding to the plurality of first intermodulation subcarrier combinations, and use the accumulated sum as the target intermodulation interference intensity.
Optionally, in the case that the number of the first intermodulation subcarrier combinations is multiple, the second determining module 24 in the embodiment of the present application is further configured to perform weighted accumulation on a plurality of first intermodulation interference intensities corresponding to the plurality of first intermodulation subcarrier combinations, and use the sum of the weighted accumulation as the target intermodulation interference intensity, where each first intermodulation subcarrier combination corresponds to a preset weight.
Optionally, in a case that there are a plurality of target access systems in the indoor distribution system, the apparatus of the embodiment of the present application may further include: and the comparison module is used for comparing the interference degrees suffered by the target access systems according to the average interference intensity of the target access systems.
In the embodiment of the application, the first intermodulation interference intensity of the inter-modulation subcarrier combination on the first subcarrier is determined, the target intermodulation interference intensity of the target access system is further determined, and finally the average interference intensity of the target access system is determined.
In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or elements referred to must have a specific orientation, and a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The embodiments described above are described with reference to the drawings, and other different forms and embodiments are possible without departing from the principle of the invention, and therefore, the invention should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will convey the scope of the invention to those skilled in the art. In the drawings, component dimensions and relative dimensions may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms "comprises," "comprising," and/or "includes," when used in this specification, specify the presence of stated features, integers, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, components, and/or groups thereof. Unless otherwise indicated, a range of values includes the upper and lower limits of the range and any subranges therebetween.

Claims (6)

1. A method for processing intermodulation interference, comprising:
determining a first intermodulation interference strength of intermodulation subcarrier combinations to a first subcarrier in an indoor distribution system, comprising: traversing intermodulation subcarrier combinations in an indoor distribution system; determining a first intermodulation subcarrier combination from the traversed intermodulation subcarrier combination, wherein intermodulation signals of the first intermodulation subcarrier combination fall into a receiving frequency band of a first subcarrier; determining that the intermodulation signal of the first intermodulation subcarrier combination falls into the receiving frequency band width of the first subcarrier as the first intermodulation interference intensity; wherein, the intensity generated by each intermodulation subcarrier combination is 1 unit, and the intermodulation bandwidth is B PIM Average interference intensity Ir per MHz of intermodulation signal MHz The method comprises the following steps: ir (Ir) MHz ＝1/B PIM The method comprises the steps of carrying out a first treatment on the surface of the The intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; the intermodulation signal falls into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of a target access system;
determining the target intermodulation interference intensity of the target access system according to the first intermodulation interference intensity, including: accumulating the first intermodulation interference intensities corresponding to the first intermodulation subcarrier combinations and taking the accumulated sum as the target intermodulation interference intensity when the first intermodulation subcarrier combinations are a plurality of, or carrying out weighted accumulation on the first intermodulation interference intensities corresponding to the first intermodulation subcarrier combinations and taking the weighted accumulated sum as the target intermodulation interference intensity when the first intermodulation subcarrier combinations are a plurality of, wherein each first intermodulation subcarrier combination corresponds to a preset weight;
determining the average interference intensity of the target access system according to the target intermodulation interference intensity, including: calculating the average interference strength per MHz No of a receiver MHZ The method comprises the following steps: no. No MHZ ＝P BW the/BW, evaluate the possible influence degree of all access networks by comparing the interference intensity received by each system unit bandwidth, wherein the average interference intensity is the interference intensity received in the unit bandwidth, P BW The BW is the system bandwidth and is the interference strength within the full bandwidth.
2. The method of claim 1, wherein in the case where there are a plurality of target access systems in the indoor distribution system, the method further comprises:
and comparing the interference degrees suffered by a plurality of target access systems according to the average interference intensity of the target access systems.
3. The method of claim 1, wherein the power of each subcarrier in the indoor distribution system is the same.
4. A device for processing intermodulation interference, comprising:
a first determining module, configured to determine a first intermodulation interference strength of an intermodulation subcarrier combination to a first subcarrier in the indoor distribution system; wherein the intermodulation subcarrier combination comprises two subcarriers that interact to produce an intermodulation signal; the intermodulation signal falls into a receiving frequency band of the first subcarrier; the frequency band of the first subcarrier belongs to the frequency band of a target access system;
a second determining module, configured to determine a target intermodulation interference strength of the target access system according to the first intermodulation interference strength;
a third determining module, configured to determine an average interference strength of the target access system according to the target intermodulation interference strength, where the average interference strength is an interference strength received in a unit bandwidth; wherein the interference strength No per MHz of the receiver average is calculated MHZ The method comprises the following steps: no. No MHZ ＝P BW BW, evaluate the extent to which all access networks may be affected by comparing the interference strength experienced per system unit bandwidth, where P BW The BW is the system bandwidth and is the interference intensity in the full bandwidth;
the first determining module includes:
the traversing unit is used for traversing intermodulation subcarrier combinations in the indoor distribution system;
the first determining unit is used for determining a first intermodulation subcarrier combination from the traversed intermodulation subcarrier combination, wherein intermodulation signals of the first intermodulation subcarrier combination fall into a receiving frequency band of the first subcarrier;
a second determining unit, configured to determine that a receiving frequency band width of the intermodulation signal of the first intermodulation subcarrier combination falls into a first subcarrier is the first intermodulation interference strength; let the intensity generated by each intermodulation subcarrier combination be 1 unit, intermodulation bandwidth be B PIM Average interference intensity Ir per MHz of intermodulation signal MHz The method comprises the following steps: ir (Ir) MHz ＝1/B PIM ；
The second determining module is further configured to accumulate a plurality of first intermodulation interference intensities corresponding to the plurality of first intermodulation subcarrier combinations, and take the accumulated sum as a target intermodulation interference intensity;
and under the condition that the plurality of first intermodulation subcarrier combinations are provided, the second determining module is further used for carrying out weighted accumulation on a plurality of first intermodulation interference intensities corresponding to the plurality of first intermodulation subcarrier combinations, and taking the weighted accumulation sum as a target intermodulation interference intensity, wherein each first intermodulation subcarrier combination corresponds to a preset weight.
5. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which program or instruction when executed by the processor implements the steps of the method of any of claims 1-3.
6. A readable storage medium, characterized in that it has stored thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any of claims 1-3.
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