CN114760717A - Equipment for suppressing wireless signal interference and communication base station - Google Patents
Equipment for suppressing wireless signal interference and communication base station Download PDFInfo
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- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/60—Jamming involving special techniques
- H04K3/68—Jamming involving special techniques using passive jamming, e.g. by shielding or reflection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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Abstract
The application discloses equipment for inhibiting wireless signal interference and a communication base station. Wherein, the method comprises the following steps: the apparatus is installed on an antenna of a communication base station, and includes: signal shielding module and connecting portion, wherein, signal shielding module includes: the cavity structure with the gap can realize at least one of the following functions: weakening the strength of a wireless signal transmitted by the communication base station through the antenna; weakening the intensity of the wireless signal received by the communication base station and refracted by the atmospheric waveguide layer for multiple times; a connecting portion comprising: and the rectangular structure with the notch is used for connecting the cavity structure to the antenna of the communication base station. The method and the device solve the technical problems of the reduction of the wireless access performance of the 5G base station, the reduction of the uplink and downlink rates of the base station and the reduction of the switching performance caused by the interference of the atmospheric waveguide signal to the uplink signal of the TDD network.
Description
Technical Field
The present invention relates to the field of wireless communication and terminals, and in particular, to a device and a communication base station for suppressing wireless signal interference.
Background
For digital mobile communications, the two-way communications may be separated in Frequency or Time, the former known as Frequency Division Duplex (FDD) and the latter known as Time Division Duplex (TDD). For FDD, the uplink and downlink use different frequency bands, generally the bandwidths of the uplink and downlink are consistent, for TDD, the uplink and downlink use the same frequency band, the time occupied by the uplink and downlink in a frequency band can be adjusted as required, and the time occupied by the uplink and downlink is generally divided into a plurality of time segments at fixed intervals, which are called Guard Periods (GP). At present, wireless networks mainly have two systems, namely TDD and FDD, and compared with the FDD mode, the TDD technology has the following advantages:
(1) asymmetric frequency bands are easily used without the need for paired bands with a specific duplex separation. The TDD technology does not need paired frequency spectrums, can utilize asymmetric frequency spectrums which can not be utilized by FDD, combines the characteristic of low chip rate of time division multiplexing synchronous code division multiple access (TD-SCDMA), and can realize 'a gap pin' in the aspect of frequency spectrum utilization, namely, the frequency spectrum can be used as long as one carrier frequency band is available, thereby flexibly utilizing the existing frequency resources.
(2) The method adapts to the user service requirement, flexibly configures the protection time slot and optimizes the frequency spectrum efficiency. The TDD technology adjusts the uplink and downlink switching points to adaptively adjust the system resources so as to increase the downlink capacity of the system and make the system more suitable for developing asymmetric services.
(3) The uplink and downlink use the same carrier frequency, so the wireless transmission is symmetrical, which is beneficial to the realization of intelligent antenna technology. The TDD technology refers to that uplink and downlink are transmitted in the same frequency band, that is, the reciprocity of uplink and downlink channels, that is, the propagation characteristics of the uplink and downlink channels are consistent, so that the smart antenna technology and the joint detection technology can be more easily implemented by using channel parameters estimated by the uplink channel. The uplink channel estimation parameters are used for downlink beam forming, and the realization of the intelligent antenna technology is facilitated. And obtaining a system matrix through channel estimation, and using the system matrix to jointly detect and distinguish the interference of different users.
(4) And a bulky radio frequency duplexer and a small base station are not needed, so that the cost is reduced. Due to the fact that uplink and downlink frequency bands of the TDD technology are the same, receiving and transmitting isolation is not needed, a single-chip Integrated Circuit (IC) can be used for achieving the transceiver, and system cost is reduced.
A major problem faced by mobile communication systems is that the spectrum resources are extremely tight, and under such conditions, it is very difficult to find a symmetric frequency band meeting the requirements, so that the TDD mode is particularly emphasized today when the frequency resources are tight, and the 5G network is mainly in the TDD mode.
Fig. 1 is a schematic diagram illustrating a principle that an uplink signal of a TDD base station is remotely interfered by an atmospheric waveguide signal. As shown in fig. 1, due to the duplex mode of the TDD system and the structural characteristics of the radio frame, the air waveguide signal may cause interference to the uplink signal of the TDD network under certain conditions. The interference strength condition of the air waveguide signal can be judged by counting the power value of the last symbol of GP of the TDD base station. According to the statistics of the existing network, the interference intensity of the atmospheric waveguide signal on the last symbol of the GP of the base station can reach-95 dBm at most, and the index performances of wireless access and the like of the 5G network in a TDD mode are seriously influenced; when the atmospheric waveguide interference is serious, the wireless access performance index of the base station is reduced from 99.8% to below 90%, the uplink and downlink rates, the switching performance and the like of the base station are correspondingly reduced, and the user experience is seriously influenced.
With the increase of the number of base stations of the 5G TDD network, the problem of atmospheric waveguide interference is more and more serious, so that the performance of base station cell access and the like is continuously reduced. For the atmospheric waveguide interference signal, each TDD base station may be an interfering party of signal interference and may also be a victim party of signal interference, that is, each TDD base station is both a transmitting party of the atmospheric waveguide interference signal and is also interfered by the atmospheric waveguide interference signal sent by other TDD base stations.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the application provides equipment for inhibiting wireless signal interference and a communication base station, and aims to at least solve the technical problems of reduction of wireless access performance of a 5G base station, reduction of uplink and downlink rates of the base station and reduction of switching performance caused by interference of an atmospheric waveguide signal on a TDD network uplink signal.
According to an aspect of an embodiment of the present application, there is provided an apparatus for suppressing an atmospheric waveguide interference signal, including: signal shielding module and connecting portion, wherein, signal shielding module includes: a cavity structure with a gap; can realize at least one of the following functions: weakening the intensity of a wireless signal transmitted by the communication base station through the antenna, and weakening the intensity of the wireless signal received by the communication base station and refracted for multiple times through the atmosphere waveguide layer; a connecting portion comprising: and the cuboid structure with the notch is used for connecting the cavity structure to an antenna of the communication base station.
Optionally, the cavity structure is an elliptical sphere, and the cavity structure is used for enabling a wireless signal to form an eddy current inside the cavity structure and enabling the wireless signal to be reflected at a target interface, where the target interface is an interface formed by a preset space where the cavity structure and the antenna are located.
Optionally, the material of the cavity structure is a metal material.
Optionally, the metal material of the cavity structure comprises one of: copper and iron.
Optionally, the cavity structure and the connecting portion are integrally designed.
Optionally, the weight of the apparatus does not exceed a preset weight; and under the condition that the maximum wind resistance borne by the equipment is smaller than the preset wind resistance, the outline area of the cavity structure is in direct proportion to the attenuation degree of the wireless signal.
Optionally, the thickness of the cavity structure is proportional to the attenuation degree of the wireless signal under the condition that the weight of the device does not exceed the preset weight.
Optionally, the shape of the cavity structure is adapted to the waveform type of the wireless signal.
Optionally, the shape of the connection portion is adapted to the shape and structure of the top of the antenna.
According to another aspect of the embodiments of the present application, there is also provided a communication base station, including: the device for suppressing the wireless signal interference is arranged in an upper lobe signal emission area of the antenna.
In an embodiment of the present application, there is provided an apparatus for suppressing an atmospheric waveguide interference signal, including: signal shielding module and connecting portion, wherein, signal shielding module includes: a cavity structure with a gap; can realize at least one of the following functions: weakening the strength of a wireless signal transmitted by a communication base station through an antenna; weakening the intensity of a communication base station receiving wireless signals refracted for multiple times through an atmospheric waveguide layer; a connecting portion comprising: and the cuboid structure with the notch is used for connecting the cavity structure to the antenna of the communication base station. By reducing the transmitting intensity and the transmitting range of the wireless signal transmitted to the atmosphere waveguide layer by the TDD disturbing base station and reducing the intensity and the receiving range of the atmosphere waveguide signal received by the TDD disturbed base station, the purposes of reducing the interference intensity of the atmosphere waveguide signal transmitted by the TDD disturbing base station to the uplink signal of other TDD disturbed base stations and the interference intensity of the other TDD disturbing base stations to the uplink signal of the TDD disturbed base station are achieved, thereby realizing the technical effect of improving the wireless performance of the whole network, and further solving the technical problems of the reduction of the wireless access performance of the 5G base station, the reduction of the uplink and downlink rates of the base station and the reduction of the switching performance caused by the interference of the atmosphere waveguide signal to the uplink signal of the TDD network.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram illustrating a long-distance interference principle of an uplink air waveguide signal of a TDD base station;
fig. 2 is a block diagram of an apparatus for suppressing wireless signal interference according to an embodiment of the present application;
fig. 3 is a schematic diagram of an Active Antenna Unit (AAU) assembly of a waveform adjustment apparatus according to an embodiment of the present application;
fig. 4 is a block diagram of a communication base station according to an embodiment of the present application;
FIG. 5 is a graph of atmospheric waveguide interference signal versus antenna transmit receive signal waveform (vertical lobe);
fig. 6 is an installation diagram of an apparatus for suppressing wireless signal interference according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to solve the technical problems mentioned in the background art, the existing method mainly comprises the following technical schemes:
(1) a power control method: when the uplink pilot time slot (UpPTS) is influenced by the atmospheric waveguide interference, the power of the UpPTS is improved, the demodulation signal-to-noise ratio is further improved, the demodulation performance is improved, and the atmospheric waveguide interference is weakened.
(2) Time length method for increasing GP: the GP time can be increased by shortening the data part of the downlink pilot time slot (DwPTS), which is equivalent to increasing the effective transmission distance of interference, further reducing the power value of the interference and weakening the interference of the atmospheric waveguide.
(3) Frequency flower arrangement networking method: and constructing an pilot frequency network, destroying time slot cross interference based on the same frequency, and weakening atmospheric waveguide interference.
(4) A method for adjusting the downward inclination angle of an antenna: the incidence angle of the electromagnetic wave is changed by adjusting the downward inclination angle of the transmitting antenna, namely the input condition of forming the super refraction is changed, and the atmospheric waveguide interference is weakened.
(5) The method for reducing the height of the base station comprises the following steps: by reducing the height of the transmitting base station and changing the atmospheric refractive index, the absolute curvature of the electromagnetic wave rays formed by refraction after the electromagnetic waves are transmitted into the air is prevented from being larger than or equal to the absolute curvature of the earth surface, and the atmospheric waveguide interference is weakened.
(6) Upshifting (upward shifting method): a period of time is reserved between GP and UpPTS, so that interference falls into a protection time slot, and atmospheric waveguide interference is weakened.
(7) The method for starting the time slot automatic configuration function comprises the following steps: and the DwPTS symbols are sequentially locked from right to left, the time slot ratio of signal uplink and downlink transmission is automatically configured, an uplink channel and a downlink channel are opened or closed, and atmospheric waveguide interference is weakened.
(8) Automatic adjustment method of declination angle: based on the information interaction of the interface, the downward inclination angle is automatically adjusted, the incident angle of electromagnetic waves is changed, namely the input condition for forming the super refraction is changed, and the atmospheric waveguide interference is weakened.
(9) And (3) developing a specific interference cancellation algorithm to eliminate interference: software is developed according to the principle of atmospheric waveguide interference, and the interference effect is weakened by using a specific algorithm.
The above methods have characteristics and certain effects, but have limitations: method 1 is not good for the balance of receiving power, if the user is at the edge of the cell and there is no space for power increase, the problem between cells will be aggravated; the method 2 and the method 6 can affect the peak rate and the cell capacity of the downlink cell of the base station; the method 3 changes the frequency planning to swing the foundation of the current optimization work, and subsequently brings many problems; the method 4 can only solve the problem of one time, and at present, no strict formula is provided for proving that the adjustment of the downward inclination angle has a definite mathematical relation with the formation of the atmospheric waveguide, and no method is provided for accurately solving the problem; the feasibility of base station site selection, the investment of labor cost and the timeliness of the method are considered in the method 5; the method 7, the method 8 and the method 9 are not realized by the prior art, and the problem of the interference of the TDD network atmospheric waveguide in all scenes cannot be effectively solved.
The utility model provides a practical and simple and easy device utilizes TDD base station antenna radio-frequency signal wave form characteristics, carries out the wave form adjustment correction to the radio-frequency signal of base station antenna transmission. Through waveform correction, the transmitting strength and the transmitting range of a wireless signal transmitted to an atmosphere waveguide layer by the TDD disturbing base station are reduced, and meanwhile, the strength and the receiving range of the atmosphere waveguide signal received by the TDD disturbed base station are correspondingly reduced, so that the interference strength of the atmosphere waveguide signal transmitted by the TDD disturbing base station to uplink signals of other TDD disturbed base stations and the interference strength of the other TDD disturbing base stations to the uplink signals of the TDD disturbed base station are reduced, and the wireless performance of the whole network is improved. For atmospheric waveguide interference, each base station cell in operation may be either a signal aggressor or a signal victim. The method and the device have the advantages that the interference and the disturbed signal are simultaneously influenced, so that the interference strength of the atmospheric waveguide signal is reduced. The device enhances the signal strength in the coverage area of the base station cell and improves the coverage performance of the base station cell.
Fig. 2 is a block diagram of a device for suppressing wireless signal interference according to an embodiment of the present application, and as shown in fig. 2, the device for suppressing wireless signal interference includes: a signal shielding module 20 and a connecting portion 22, wherein: the signal shielding module 20 includes: a cavity structure with a gap; can realize at least one of the following functions: weakening the strength of a wireless signal transmitted by a communication base station through an antenna; and weakening the intensity of the wireless signal received by the communication base station and refracted by the atmospheric waveguide layer for multiple times.
When the signal shielding module 20 is installed in a communication base station as an interfering party, the power of an atmospheric waveguide interference signal emission source of the interfering base station can be effectively shielded; when the shielding device is installed on a communication base station as a victim, the power of an atmospheric waveguide interference signal received by the victim base station can be effectively shielded. The method comprises the following steps that the power of an atmospheric waveguide interference signal emission source of a disturbing base station is effectively shielded, and specifically, the power is realized by inhibiting the transmission of wireless signals emitted by lobes on an antenna of a communication base station; the effective shielding of the atmospheric waveguide interference signal power received by the interfered base station is realized by inhibiting the communication base station from receiving the wireless signal which is refracted for multiple times by the atmospheric waveguide layer.
The connection portion 22 includes: and the cuboid structure with the notch is used for connecting the cavity structure to the antenna of the communication base station. Fig. 3 is an assembly diagram of an application of a device for suppressing wireless signal interference, in which the signal shielding module 20 (i.e., the waveform adjusting apparatus in fig. 3) is mounted on an antenna through a connecting portion 22, wherein the antenna is a 5G Active Antenna Unit (AAU), unlike a general antenna, the 5G-AAU has a dedicated metal heat sink, and the general antenna does not have the dedicated metal heat sink.
In an embodiment of the present application, the communication base station is a wireless network base station, and the wireless signal is an electromagnetic wave emitted by the wireless network base station, where a mode of the wireless network includes: TDD mode, FDD mode; the wireless network is an SA network; the interference is caused by an atmospheric waveguide to a TDD network uplink signal under a certain condition, wherein the atmospheric waveguide is caused by a TDD standard duplex mode and a wireless frame structure characteristic; the atmospheric waveguide is a phenomenon that under a certain meteorological condition, electromagnetic waves propagating in an atmospheric boundary layer, particularly in a near stratum, are influenced by atmospheric refraction, the propagation track of the electromagnetic waves bends to the ground, and when the curvature exceeds the curvature of the earth surface, the electromagnetic waves are partially trapped in an atmospheric thin layer with a certain thickness.
According to an optional embodiment of the present application, the cavity structure is an elliptical sphere, and is configured to enable a wireless signal to form an eddy current inside the cavity structure and enable the wireless signal to generate a reflection at a target interface, where the target interface is an interface formed by a preset space where the cavity structure and the antenna are located.
When the wireless signal forms an eddy current in the cavity structure and the interface formed by the area radiated by the signal emitted by the antenna and the cavity structure is reflected, the device can weaken the field intensity value of the interference field in the protected space to the maximum extent, and the effect of shielding the interference signal is achieved.
According to another alternative embodiment of the present application, the material of the cavity structure is a metallic material.
The metal material has conductivity, and can generate effects of reflection, absorption, cancellation and the like on electromagnetic waves, thereby playing a role in reducing electromagnetic wave radiation. The metal material can shield an electromagnetic field, controls the induction and radiation propagation of electromagnetic interference from one area to another area by the principle of metal isolation, and can be divided into electrostatic shields according to different shielding purposes: made of a diamagnetic material (e.g., copper, aluminum) and connected to ground such that the electric field is terminated on the metallic surface of the shield and charges are transferred into ground; magnetic shield body: made of strong magnetic material (such as steel) with high magnetic permeability, and can limit the magnetic force lines in the shielding body; electromagnetic shielding: the interference field can form an eddy current in the shield, and the reflection is generated on the interface of the shield and the protected space, so that the field intensity value of the interference field in the protected space is weakened; the metal material is an electromagnetic shield body and is used for restraining the influence of a high-frequency electromagnetic field and achieving a shielding effect.
As still another alternative embodiment of the present application, the metal material used for preparing the cavity structure includes one of the following: copper and iron, the better the conductivity and magnetic permeability of the above metal materials, the better the signal shielding effect.
In yet another alternative embodiment of the present application, the cavity structure is integrally designed with the material of the rectangular parallelepiped structure.
In specific implementation, the device for inhibiting the wireless signal interference is made of an integral material, namely, the device is an integral device without splicing under a special condition and electromagnetic leakage so as to enhance the shielding effect on the wireless signals transmitted by the base station, and when holes or gaps appear on the shielding body, the shielding effect can be directly reduced.
According to an optional embodiment of the present application, the weight of the above-mentioned device does not exceed a preset weight, and the outline area of the cavity structure is directly proportional to the attenuation degree of the wireless signal when the maximum wind resistance borne by the device is less than the preset wind resistance, where the preset weight is the maximum weight that the antenna can bear without deformation, and the preset wind resistance is the maximum wind resistance that the antenna can bear.
The size of the signal shielding part of the waveform adjusting device (i.e. the device for suppressing wireless signal interference) is mainly determined according to the following two principles: firstly, according to the signal shielding effect, in general, the larger the outline area of the waveform adjusting device is, the better the shielding effect is (the larger the intensity value of weakening the wireless signal is); secondly, according to the influence of the waveform adjusting device on the coverage area of the signal transmitted by the antenna component of the base station, under the general condition, the larger the outline area of the waveform adjusting device is, the larger the influence on the field intensity, the coverage area range and the like of the coverage area of the transmitted signal is; in addition, the influence of wind resistance, load bearing and the like on the safety of the communication base station after the waveform adjusting device is installed is fully considered.
According to another alternative embodiment of the present application, the thickness of the cavity structure is proportional to the degree of attenuation of the radio signal, in case the weight of the device does not exceed the above-mentioned preset weight.
In general, the thickness of the waveform adjusting apparatus is designed in consideration of the following three factors. Firstly, the larger the thickness of the signal shielding part of the waveform adjusting device is, the better the signal shielding effect is (the larger the intensity value for weakening the wireless signal is); secondly, the bearing safety influence after the device is installed is fully considered, and the larger the thickness of the device is, the larger the weight of the device is; thirdly, the thickness and the weight are considered according to the toughness of the material, and the device is ensured not to deform after long-term use. When the toughness of the selected material is relatively better, the thickness of the cavity structure is relatively larger; when the selected material has a relatively poor toughness, the thickness of the cavity structure is relatively small, and the thickness of the cavity structure is recommended to be 0.5 mm.
According to some alternative embodiments of the present application, the shape of the cavity structure is adapted to the waveform type of the wireless signal. Since the upper lobe signal transmitting area of the antenna is the main interference side and interference side of the atmosphere waveguide signal, the signal shielding module is arranged in the upper lobe signal transmitting area of the antenna in practical use. Therefore, the shape of the cavity structure is designed according to the wave shape of the antenna component of the base station, particularly the wave shape characteristic of the upper lobe of the emission, and the specific shape is an elliptic sphere.
In some alternative embodiments of the present application, the structure and shape of the connection portion 22 is adapted to the shape and structure of the top portion of the antenna.
In the embodiment of the present application, the structure and shape of the connection portion of the device that suppresses radio signal interference are designed according to the shape and structure of the top portion of the base station antenna section.
Fig. 4 is a block diagram of a communication base station according to an embodiment of the present application, and as shown in fig. 4, the communication base station includes: an antenna 40 and above a device 42 for suppressing radio signal interference, wherein the device 42 for suppressing radio signal interference is installed in the upper lobe signal emitting area of the antenna 40.
Fig. 5 is a schematic diagram showing a relationship between an atmospheric waveguide interference signal and a waveform (vertical lobe) of an antenna transmission receiving signal, and as shown in fig. 5, since an electromagnetic wave transmission direction of an upper lobe of the antenna is consistent with a radiation direction of the atmospheric waveguide interference signal, the gain of the upper lobe receiving waveguide signal of the antenna is high, and the received interference signal strength is strong; the emission direction of the electromagnetic wave of the antenna main lobe is different from the radiation direction of the interference signal of the atmospheric waveguide, so that the gain of the signal received by the antenna main lobe is low, and the strength of the received interference signal is weak. The upper lobe is thus the main offender and victim of the atmospheric waveguide signal.
Therefore, the signal shielding module is arranged in the upper lobe signal emission area of the antenna through the connecting part, and the technical effect of suppressing the interference signal to the maximum extent can be achieved.
Fig. 6 is an installation diagram of an apparatus for suppressing wireless signal interference according to an embodiment of the present application. As shown in fig. 6, after the device is installed, the atmospheric waveguide interference signal 1 and the signal 2 and signals in the similar directions are shielded, the base station only receives the atmospheric waveguide interference signal 3 with a weaker gain and the interference signals 1 and 2 which are greatly attenuated, and the upper lobe of the station is suppressed, so that the signal radiation intensity in the upper lobe direction of the station is reduced, and the lower lobe and the main lobe are enhanced due to the signal reflection effect of the device, so that the effect of the device of the present invention on suppressing wireless signal interference is achieved.
In a certain test, a certain cell is taken as an experimental cell, the equipment with the size of 20cm x 40cm is installed, 13 TDD base station cells with the 3.5GHz in the same direction in the range of 5Km around the experimental cell are taken as comparison cells, the GP power value change conditions of the cells before and after installation are compared, and the shielding effect of the equipment is evaluated, wherein the following test results are shown as follows:
it can be seen from the experimental results that the power of the GP change is 2.08dB before and after the installation of the device in the experimental cell in which the device is installed, the average GP change power in the comparison cell in which the device is not installed is 1.21dB, and the GP power in the experimental cell in which the device is installed is 0.87dB higher than that in the cell in which the device is not installed, so that the device can effectively suppress the atmospheric waveguide signal interference.
In summary, the waveform adjusting apparatus is suitable for interference resistance of the atmospheric waveguide signal of the wireless base station with TDD systems such as 4G/5G, and can implement the following functions: effectively shielding the power of an atmospheric waveguide interference signal emission source of an interfering base station; effectively shielding the power of an atmospheric waveguide interference signal received by an interfered base station; the strength of useful signals of communication users in a base station cell is enhanced, and the coverage performance of the base station cell is improved; the problem of atmospheric waveguide interference is solved from two angles of interference signal disturbance and disturbance, the problems of the emission intensity of an initial disturbance party of the interference signal and the receiving intensity of a terminal disturbance party are fundamentally reduced, and the anti-interference effect is obvious.
The above-mentioned serial numbers of the embodiments of the present application are merely for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. An apparatus for suppressing interference of a radio signal, the apparatus being mounted on an antenna of a communication base station, comprising: a signal shielding module and a connecting part, wherein,
the signal shielding module comprises: the cavity structure with the gap can realize at least one of the following functions: weakening the strength of a wireless signal transmitted by the communication base station through the antenna; weakening the intensity of the wireless signal received by the communication base station and refracted by the atmosphere waveguide layer for multiple times;
the connecting portion includes: and the rectangular structure with the notch is used for connecting the cavity structure to the antenna of the communication base station.
2. The apparatus of claim 1,
the cavity structure is in the shape of an oval sphere;
the cavity structure is used for enabling the wireless signals to form eddy currents inside the cavity structure and enabling the wireless signals to be reflected at a target interface, wherein the target interface is an interface formed by a preset space where the cavity structure and the antenna are located.
3. The apparatus of claim 1 or 2, wherein the material of the cavity structure is a metallic material.
4. The apparatus of claim 3, wherein the metallic material comprises one of: copper and iron.
5. The apparatus according to claim 1 or 2, characterized in that the cavity structure and the material of the connection part are of an integrated design.
6. The apparatus according to claim 1 or 2,
under the condition that the weight of the equipment is not more than the preset weight and the maximum wind resistance borne by the equipment is less than the preset wind resistance, the outline area of the cavity structure is in direct proportion to the attenuation degree of the wireless signal.
7. The apparatus according to claim 1 or 2,
under the condition that the weight of the equipment does not exceed the preset weight, the thickness of the cavity structure is in direct proportion to the attenuation degree of the wireless signal.
8. The device according to claim 1 or 2, characterized in that the shape of the cavity structure is adapted to the wave type of the wireless signal.
9. The apparatus of claim 1, wherein the structure and shape of the connection portion is adapted to the shape and structure of the top of the antenna.
10. A communication base station, comprising: an antenna and a device for suppressing radio signal interference as claimed in any of claims 1 to 9 wherein the device for suppressing radio signal interference is mounted in the upper lobe signal transmitting region of the antenna.
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