CN116527121A - Method for implementing interference cancellation, base station, electronic equipment and storage medium - Google Patents
Method for implementing interference cancellation, base station, electronic equipment and storage medium Download PDFInfo
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- CN116527121A CN116527121A CN202310792935.7A CN202310792935A CN116527121A CN 116527121 A CN116527121 A CN 116527121A CN 202310792935 A CN202310792935 A CN 202310792935A CN 116527121 A CN116527121 A CN 116527121A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
Abstract
The disclosure provides an interference elimination implementation method, a base station, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: receiving a first interference signal sent by a ground terminal through a first antenna, and receiving a second interference signal sent by the ground terminal through a second antenna; determining a parameter adjustment control signal according to the first interference signal and the second interference signal; judging whether the parameter adjustment control signal meets a preset condition or not; under the condition that the parameter adjustment control signal does not meet the preset condition, carrying out parameter adjustment on the second interference signal according to the parameter adjustment control signal; and determining a target parameter adjustment value for the second interference signal in case the parameter adjustment control signal meets a preset condition. The method can determine the target parameter adjustment value for interference elimination, thereby eliminating the interference signal existing in the subsequently received control uplink signal by using the target parameter adjustment value.
Description
Technical Field
The disclosure relates to the field of communication technologies, and in particular, to an implementation method of interference cancellation, an air-to-ground communication base station, an electronic device, and a storage medium.
Background
In an Air-to-Ground communication network, an ATG (Air-to-Ground communication) base station communicates with an ATG terminal, and the ATG base station can receive an ATG signal sent by the ATG terminal through an ATG antenna; meanwhile, there may be an IMT (International Mobile Telecommunications, international mobile communication) base station and an IMT terminal, and the IMT base station may receive an IMT signal transmitted by the IMT terminal through an IMT antenna.
In the related art, under the condition that the ATG and the IMT are in the same frequency, the ATG base station can receive the ground communication interference (i.e. IMT interference) of the IMT terminal from the ground, thereby improving the uplink receiving base noise of the ATG, reducing the uplink receiving performance of the ATG and influencing the user experience of the ATG.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure aims to provide an implementation method for interference cancellation, an air-to-ground communication base station, an electronic device, and a storage medium, where the method may determine a target parameter adjustment value for interference cancellation, so as to implement cancellation of an interference signal existing in a subsequently received control uplink signal by using the target parameter adjustment value, and improve instantaneity, effectiveness, and accuracy of interference cancellation, so as to enhance uplink performance of air-to-ground communication.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
The embodiment of the disclosure provides a method for implementing interference cancellation, which comprises the following steps: receiving a first interference signal sent by a ground terminal through a first antenna, and receiving a second interference signal sent by the ground terminal through a second antenna; determining a parameter adjustment control signal according to the first interference signal and the second interference signal; judging whether the parameter adjustment control signal meets a preset condition or not; under the condition that the parameter adjustment control signal does not meet the preset condition, parameter adjustment is carried out on the second interference signal according to the parameter adjustment control signal; and determining a target parameter adjustment value for the second interference signal under the condition that the parameter adjustment control signal meets the preset condition.
In some exemplary embodiments of the present disclosure, the method further comprises: receiving an air uplink signal through the first antenna, wherein the air uplink signal is mixed with a third interference signal sent by the ground terminal, and receiving a fourth interference signal sent by the ground terminal through the second antenna; performing parameter adjustment on the fourth interference signal according to the target parameter adjustment value to obtain an adjusted fourth interference signal; and eliminating the third interference signal in the air uplink signal by using the adjusted fourth interference signal to obtain a target uplink signal.
In some exemplary embodiments of the present disclosure, the parameter adjustment control signal includes an amplitude adjustment control signal including an amplitude adjustment value and a phase adjustment control signal including a phase adjustment value; wherein determining a parameter adjustment control signal from the first and second interfering signals comprises: determining the amplitude adjustment control signal according to the difference value between the amplitude of the first interference signal and the amplitude of the second interference signal, and determining the phase adjustment control signal according to the difference value between the phase of the first interference signal and the phase of the second interference signal; wherein, judging whether the parameter adjustment control signal meets a preset condition comprises: judging whether the amplitude adjustment value and the phase adjustment value are smaller than a preset value or not; wherein, according to the parameter adjustment control signal, parameter adjustment is performed on the second interference signal, including: and adjusting the amplitude of the second interference signal according to the amplitude adjustment control signal, and adjusting the phase of the second interference signal according to the phase adjustment control signal.
In some exemplary embodiments of the present disclosure, performing cancellation processing on the third interference signal in the air uplink signal by using the adjusted fourth interference signal to obtain a target uplink signal, including: and carrying out subtraction processing on the space uplink signal and the adjusted fourth interference signal to obtain the target uplink signal.
In some exemplary embodiments of the present disclosure, the air uplink signal includes an uplink signal sent by an air terminal, where the air terminal is an air-to-ground broadband communication ATG terminal.
In some exemplary embodiments of the present disclosure, determining a parameter adjustment control signal from the first and second interfering signals includes: performing signal amplification processing on the first interference signal to obtain an amplified first interference signal; performing signal amplification processing on the second interference signal to obtain an amplified second interference signal; and determining a parameter adjustment control signal according to the amplified first interference signal and the amplified second interference signal.
In some exemplary embodiments of the present disclosure, the ground terminal is an international mobile telecommunication IMT terminal, the first interference signal is a first IMT interference signal, and the second interference signal is a second IMT interference signal.
The embodiment of the disclosure provides a space-to-ground communication base station, which comprises: the antenna comprises a first antenna, a second antenna, an interference canceller and a parameter adjuster; the first antenna is used for receiving a first interference signal sent by the ground terminal; the second antenna is used for receiving a second interference signal sent by the ground terminal; the interference canceller is used for determining a parameter adjustment control signal according to the first interference signal and the second interference signal, judging whether the parameter adjustment control signal meets a preset condition, and sending the parameter adjustment control signal to the parameter adjuster when the parameter adjustment control signal does not meet the preset condition; determining a target parameter adjustment value for the second interference signal if the parameter adjustment control signal meets the preset condition; the parameter adjuster is used for adjusting parameters of the second interference signal according to the parameter adjustment control signal and sending the adjusted second interference signal to the interference canceller.
An embodiment of the present disclosure provides an electronic device, including: at least one processor; and the storage terminal device is used for storing at least one program, and when the at least one program is executed by the at least one processor, the at least one processor is enabled to realize the implementation method of any interference elimination.
The embodiment of the disclosure provides a computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements a method for implementing any of the above-mentioned interference cancellation.
According to the interference elimination method provided by the embodiment of the disclosure, a first interference signal sent by a ground terminal is received through a first antenna, and a second interference signal sent by the ground terminal is received through a second antenna; determining a parameter adjustment control signal according to the first interference signal and the second interference signal; judging whether the parameter adjustment control signal meets a preset condition or not; under the condition that the parameter adjustment control signal does not meet the preset condition, parameter adjustment is carried out on the second interference signal according to the parameter adjustment control signal until the parameter adjustment control signal redetermined according to the first interference signal and the adjusted second interference signal meets the preset condition, and a target parameter adjustment value for the second interference signal is determined; the method can determine the target parameter adjustment value for interference elimination, thereby realizing the elimination of the interference signal existing in the subsequently received control uplink signal by using the target parameter adjustment value, improving the instantaneity, the effectiveness and the accuracy of the interference elimination, and further enhancing the uplink performance of air-to-ground communication.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 is a schematic diagram of an air-to-ground communication base station and an air terminal in the related art.
Fig. 2 is a flow chart illustrating a method of implementing interference cancellation according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating communication between an air-to-ground communication base station and an air terminal according to an example embodiment.
Fig. 4 is a flow chart illustrating another implementation of interference cancellation in accordance with an exemplary embodiment.
Fig. 5 is a flow chart illustrating yet another implementation of interference cancellation in accordance with an exemplary embodiment.
Fig. 6 is a block diagram of a space-to-ground communication base station, according to an example embodiment.
Fig. 7 is a schematic diagram of an electronic device according to an exemplary embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and 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 fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will recognize that the aspects of the present disclosure may be practiced with one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The drawings are merely schematic illustrations of the present disclosure, in which like reference numerals denote like or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in at least one hardware module or integrated circuit or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and not necessarily all of the elements or steps are included or performed in the order described. For example, some steps may be decomposed, and some steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
Furthermore, in the description of the present disclosure, the terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of at least one element or component; the terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements or components other than the listed elements or components; the terms "first," "second," and "third," etc. are used merely as labels, and do not limit the number of their objects.
Fig. 1 is a schematic diagram of an air-to-ground communication base station and an air terminal in the related art.
Referring to fig. 1, an Air-to-Ground communication base station 110 may be an ATG (Air-to-group) base station, an Air terminal 120 may be an ATG terminal, a Ground base station 140 may be an IMT (International Mobile Telecommunications, international mobile communication) base station, and a Ground terminal 130 may be an IMT terminal.
Air-to-ground communication base station 110 communicates with air terminal 120, and air-to-ground communication base station 110 may receive an air-to-ground communication signal (e.g., an ATG signal) transmitted by air terminal 120 via an air-to-ground communication antenna (e.g., an ATG antenna); the ground base station 140 communicates with the ground terminal 130, and the ground base station 140 may receive a ground communication signal (e.g., IMT signal) transmitted by the ground terminal 130 through a ground communication antenna (e.g., IMT antenna).
However, in the related art, under the condition that the ATG and the IMT are in the same frequency, the ATG base station receives the ground communication interference (i.e., IMT interference) from the ground IMT terminal, so that the uplink receiving noise of the ATG is improved, the uplink receiving performance of the ATG is reduced, and the user experience of the ATG is affected.
In view of the technical problems in the related art, embodiments of the present disclosure provide an implementation method of interference cancellation, which is used to at least solve one or all of the technical problems. The following describes example embodiments of the present disclosure in detail with reference to the accompanying drawings.
Fig. 2 is a flowchart illustrating an implementation method of interference cancellation according to an exemplary embodiment, and the implementation method of interference cancellation provided by the embodiments of the present disclosure may be performed by an air-to-ground communication base station, but the present disclosure is not limited thereto.
As shown in fig. 2, the method for implementing interference cancellation provided in the embodiments of the present disclosure may include steps S202 to S210.
In the embodiment of the disclosure, the air-to-ground communication base station may be an ATG base station, where the ATG base station may be equipped with a first antenna and a second antenna, the first antenna may be an ATG antenna, and the second antenna may be an IMT auxiliary antenna; when the ATG terminal transmits an ATG signal to the ATG base station, the ATG antenna is used for receiving the ATG signal and an IMT interference signal transmitted by the IMT terminal, and the IMT auxiliary antenna is used for receiving the IMT interference signal transmitted by the IMT terminal; when no ATG terminal transmits an ATG signal to the ATG base station, both the ATG antenna and the IMT auxiliary antenna are used for receiving an IMT interference signal transmitted by the IMT terminal, i.e., the following step S202 is performed.
In step S202, a first interference signal transmitted by a ground terminal is received through a first antenna, and a second interference signal transmitted by the ground terminal is received through a second antenna.
In the embodiment of the disclosure, the ground terminal may be an IMT terminal, the first interference signal may be a first IMT interference signal, and the second interference signal may be a second IMT interference signal; when the ATG terminal does not send an ATG signal to the ATG base station, the ATG antenna receives a first IMT interference signal sent by the IMT terminal, and the IMT auxiliary antenna receives a second IMT interference signal sent by the IMT terminal.
Fig. 3 is a schematic diagram illustrating communication between an air-to-ground communication base station and an air terminal according to an example embodiment.
Referring to fig. 3, the air-to-ground communication base station 310 may be installed with a first antenna 311 (e.g., an ATG antenna) and a second antenna 312 (e.g., an IMT auxiliary antenna), the ground base station 340 is installed with a ground communication antenna 341 (e.g., an IMT antenna), and a horizontal angle and a downtilt angle of the second antenna 312 of the air-to-ground communication base station 310 coincide with the ground communication antenna 341 of the ground base station 340; the first antenna 311 may include a main lobe that receives an air-to-ground communication signal (e.g., an ATG signal) transmitted from an air terminal 320 (e.g., an ATG terminal), and side lobes that receive IMT interference transmitted from a ground terminal 330, and the second antenna 312 receives IMT interference transmitted from the ground terminal 330; since the air-to-ground communication signal is an indirect signal, when the air-to-ground communication signal is not received, the first antenna 311 is used for receiving the first interference signal transmitted by the ground terminal 330, and the second antenna 312 is used for receiving the second interference signal transmitted by the ground terminal 330.
In step S204, a parameter adjustment control signal is determined from the first interference signal and the second interference signal.
In the embodiment of the disclosure, the parameters of the first interference signal and the second interference signal may be compared, and the parameter adjustment control signal is determined according to the difference value of the parameters of the first interference signal and the second interference signal, where the parameter adjustment control signal is a control signal for adjusting the second interference signal so that the adjusted second interference signal and the first interference signal may be mutually offset after being overlapped.
In an exemplary embodiment, the parameter adjustment control signals include an amplitude adjustment control signal and a phase adjustment control signal; wherein determining a parameter adjustment control signal from the first and second interfering signals comprises: an amplitude adjustment value is determined according to the difference between the amplitude of the first interference signal and the amplitude of the second interference signal, the amplitude adjustment value is used as an amplitude adjustment control signal, and a phase adjustment control signal is determined according to the difference between the phase of the first interference signal and the phase of the second interference signal.
In the embodiment of the disclosure, the amplitude of the first interference signal and the amplitude of the second interference signal may be compared, and a difference value between the amplitudes of the first interference signal and the second interference signal is used as an amplitude adjustment control signal; the phase of the first interference signal and the phase of the second interference signal may be compared, and a difference between the phases of the first interference signal and the second interference signal may be used as the phase adjustment control signal.
In an exemplary embodiment, determining a parameter adjustment control signal from a first interference signal and a second interference signal comprises: performing signal amplification processing on the first interference signal to obtain an amplified first interference signal; performing signal amplification processing on the second interference signal to obtain an amplified second interference signal; and determining a parameter adjustment control signal according to the amplified first interference signal and the amplified second interference signal.
In the embodiment of the disclosure, before the parameter adjustment control signal is determined according to the first interference signal and the second interference signal, the first interference signal may be amplified by using the ATG signal receiving amplifier, and the second interference signal may be amplified by using the IMT interference receiving amplifier.
In step S206, it is determined whether the parameter adjustment control signal satisfies a preset condition.
In the embodiment of the present disclosure, the preset condition may be whether the parameter adjustment value in the parameter adjustment control signal is a preset value, and the preset value may be, for example, 0; or judging whether the preset value is smaller than the preset value or not, wherein the preset value can be set according to actual conditions; if the parameter adjustment control signal meets the preset condition, step S208 is executed; if the parameter adjustment control signal does not meet the preset condition, step S210 is performed.
In an exemplary embodiment, the amplitude adjustment control signal comprises an amplitude adjustment value and the phase adjustment control signal comprises a phase adjustment value; wherein, judge whether parameter adjustment control signal satisfies the preset condition, include: and judging whether the amplitude adjustment value and the phase adjustment value are smaller than a preset value.
In the embodiment of the disclosure, it may be respectively determined whether the amplitude adjustment value included in the amplitude adjustment control signal and the phase adjustment value included in the phase adjustment control signal are both smaller than a preset value or are both 0.
In step S208, if the parameter adjustment control signal does not meet the preset condition, parameter adjustment is performed on the second interference signal according to the parameter adjustment control signal.
In the embodiment of the disclosure, under the condition that the parameter adjustment control signal does not meet the preset condition, parameter adjustment is performed on the second interference signal according to the parameter adjustment control signal, an adjusted second interference signal is obtained, parameters of the first interference signal and the adjusted second interference signal are continuously compared, the parameter adjustment control signal is obtained again, whether the parameter adjustment control signal meets the preset condition is continuously judged, if the parameter adjustment control signal does not meet the preset condition, the second interference signal is continuously adjusted until the parameter adjustment control signal meets the preset condition.
In an exemplary embodiment, parameter adjustment of the second interference signal according to the parameter adjustment control signal comprises: the amplitude of the second interference signal is adjusted according to the amplitude adjustment control signal, and the phase of the second interference signal is adjusted according to the phase adjustment control signal.
In the embodiment of the disclosure, the amplitude of the second interference signal may be adjusted according to the amplitude adjustment value included in the amplitude adjustment control signal, and the phase of the second interference signal may be adjusted according to the phase adjustment value included in the phase adjustment control signal.
In step S210, in the case where the parameter adjustment control signal satisfies the preset condition, a target parameter adjustment value for the second interference signal is determined.
In the embodiment of the disclosure, after one or more times of adjustment is performed on the second interference signal, parameters of the first interference signal and the adjusted second interference signal are compared, a parameter adjustment control signal is obtained again, whether the parameter adjustment control signal meets a preset condition is continuously judged, and under the condition that the parameter adjustment control signal meets the preset condition, a target parameter adjustment value for the second interference signal is determined and recorded, wherein the target parameter adjustment value can comprise a target amplitude parameter adjustment value and a target phase parameter adjustment value.
In an embodiment of the present disclosure, determining the target parameter adjustment value for the second interfering signal may include: and determining a target parameter adjustment value according to the adjusted second interference signal and the received original second interference signal, for example, subtracting the parameters of the adjusted second interference signal and the received original second interference signal to obtain the target parameter adjustment value.
According to the interference elimination method provided by the embodiment of the disclosure, a first interference signal sent by a ground terminal is received through a first antenna, and a second interference signal sent by the ground terminal is received through a second antenna; determining a parameter adjustment control signal according to the first interference signal and the second interference signal; judging whether the parameter adjustment control signal meets a preset condition or not; under the condition that the parameter adjustment control signal does not meet the preset condition, parameter adjustment is carried out on the second interference signal according to the parameter adjustment control signal until the parameter adjustment control signal redetermined according to the first interference signal and the adjusted second interference signal meets the preset condition, and a target parameter adjustment value for the second interference signal is determined; the method can determine the target parameter adjustment value for interference elimination, thereby realizing the elimination of the interference signal existing in the subsequently received control uplink signal by using the target parameter adjustment value, improving the instantaneity, the effectiveness and the accuracy of the interference elimination, and further enhancing the uplink performance of air-to-ground communication.
Fig. 4 is a flow chart illustrating another implementation of interference cancellation in accordance with an exemplary embodiment.
As shown in fig. 4, after step S210 of the implementation method of interference cancellation provided in fig. 2, the implementation method of interference cancellation provided in the embodiment of the disclosure may further include steps S402 to S406.
In the embodiment of the present disclosure, when no ATG terminal transmits an ATG signal to an ATG base station, both the ATG antenna and the IMT auxiliary antenna are used for receiving an IMT interference signal transmitted by the IMT terminal, that is, executing the step S202; when the ATG terminal transmits an ATG signal to the ATG base station, the ATG antenna is configured to receive the ATG signal and an IMT interference signal transmitted by the IMT terminal, and the IMT auxiliary antenna is configured to receive the IMT interference signal transmitted by the IMT terminal, i.e. the following step S402 is performed.
In step S402, an air uplink signal is received through a first antenna, the air uplink signal is mixed with a third interference signal transmitted by a ground terminal, and a fourth interference signal transmitted by the ground terminal is received through a second antenna.
In an exemplary embodiment, the air uplink signal includes an uplink signal sent by an air terminal, which is an ATG terminal.
In the embodiment of the present disclosure, referring to fig. 3, since the air-to-ground communication signal is an indirect signal, when the air terminal 320 transmits the air-to-ground communication signal (e.g., the ATG signal), the first antenna 311 is used to receive the third interference signal transmitted by the ground terminal 330, and the second antenna 312 is used to receive the fourth interference signal transmitted by the ground terminal 330.
In the embodiment of the disclosure, the third interference signal and the first interference signal may be the same or different; the fourth interference signal and the second interference signal may be the same or different.
In step S404, parameter adjustment is performed on the fourth interference signal according to the target parameter adjustment value, so as to obtain an adjusted fourth interference signal.
In the embodiment of the disclosure, parameter adjustment is performed on the fourth interference signal according to the determined target parameter adjustment value, for example, the amplitude of the fourth interference signal is adjusted according to the determined target amplitude adjustment value, and the phase of the fourth interference signal is adjusted according to the determined target phase adjustment value.
In step S406, the adjusted fourth interference signal is used to cancel the third interference signal in the air uplink signal, so as to obtain the target uplink signal.
In an exemplary embodiment, performing cancellation processing on a third interference signal in an air uplink signal by using the adjusted fourth interference signal to obtain a target uplink signal, including: and performing subtraction processing on the space uplink signal and the adjusted fourth interference signal to obtain a target uplink signal.
In the embodiment of the disclosure, the amplitude of the air uplink signal may be subtracted by the amplitude of the adjusted fourth interference signal, and the phase of the air uplink signal may be subtracted by the phase of the adjusted fourth interference signal, so that the target uplink signal is determined according to the obtained amplitude and phase, and the interference signal in the air uplink signal is cancelled.
According to the interference elimination method provided by the embodiment of the disclosure, through eliminating the interference signals existing in the received control uplink signals by the determined target parameter adjustment values, the instantaneity, the effectiveness and the accuracy of interference elimination can be improved, the uplink performance of air-to-ground communication is enhanced, the performance of air-to-ground communication base station equipment is improved, and the adaptability, the flexibility and the frequency resource utilization rate of the air-to-ground communication system are improved.
Fig. 5 is a flow chart illustrating yet another implementation of interference cancellation in accordance with an exemplary embodiment.
As shown in fig. 5, the method for implementing interference cancellation provided in the embodiments of the present disclosure may include steps S502 to S516.
In step S502, each module of the air-to-ground communication base station is initialized.
In step S504, it is determined whether or not a space uplink signal is received.
When there is an air uplink signal gap reception, step S514 is performed; when the space uplink signal is not received, step S506 is performed.
In step S506, the amplitudes and phases of the first and second interference signals are compared, and amplitude and phase control signals are output, respectively.
In step S508, it is determined whether the output amplitude and phase control signals both satisfy a preset condition.
For example, it may be determined whether or not the amplitude adjustment value and the phase adjustment value in the output amplitude and phase control signal are both zero; if yes, go to step S512; if not, step S510 is performed.
In step S510, the amplitude and phase of the second interference signal are adjusted based on the amplitude and phase control signal.
In step S512, the amplitude adjustment value and the phase adjustment value for the second interference signal are recorded and held, respectively.
In step S514, the amplitudes and phases of the input signal 1 (target uplink signal+third interference signal) and the input signal 2 (adjusted fourth interference signal) are subtracted, respectively, to output the target uplink signal.
And the received air uplink signal is used as an input signal 1, the fourth interference signal is regulated according to the amplitude regulation value and the phase regulation value, the regulated fourth interference signal is used as an input signal 2, and the output target uplink signal counteracts the third interference signal.
It should also be understood that the above is only intended to assist those skilled in the art in better understanding the embodiments of the present disclosure, and is not intended to limit the scope of the embodiments of the present disclosure. It will be apparent to those skilled in the art from the foregoing examples that various equivalent modifications or variations can be made, for example, some steps of the methods described above may not be necessary, or some steps may be newly added, etc. Or a combination of any two or more of the above. Such modifications, variations, or combinations thereof are also within the scope of the embodiments of the present disclosure.
It should also be understood that the foregoing description of the embodiments of the present disclosure focuses on highlighting differences between the various embodiments and that the same or similar elements not mentioned may be referred to each other and are not repeated here for brevity.
It should also be understood that the sequence numbers of the above processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.
It is also to be understood that in the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent and may be referenced to one another in the absence of a particular explanation or logic conflict, and that the features of the various embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.
Examples of the method for determining the network anomaly detection model provided by the present disclosure are described in detail above. It will be appreciated that the computer device, in order to carry out the functions described above, comprises corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
The following are base station embodiments of the present disclosure that may be used to perform method embodiments of the present disclosure. For details not disclosed in the embodiments of the apparatus of the present disclosure, please refer to the embodiments of the method of the present disclosure.
Fig. 6 is a block diagram of a space-to-ground communication base station, according to an example embodiment.
As shown in fig. 6, the air-to-ground communication base station 600 may include a first antenna 601, a second antenna 602, an interference canceller 605, and a parameter adjuster 606.
The first antenna 601 is configured to receive a first interference signal sent by a ground terminal; the second antenna 602 is configured to receive a second interference signal sent by the ground terminal; the interference canceller 605 is configured to determine a parameter adjustment control signal according to the first interference signal and the second interference signal, determine whether the parameter adjustment control signal meets a preset condition, and send the parameter adjustment control signal to the parameter adjuster 606 if the parameter adjustment control signal does not meet the preset condition; determining a target parameter adjustment value for the second interference signal if the parameter adjustment control signal meets a preset condition; the parameter adjuster 606 is configured to perform parameter adjustment on the second interference signal according to the parameter adjustment control signal, and send the adjusted second interference signal to the interference canceller 605.
In this embodiment of the disclosure, the ground terminal may be an IMT terminal, the first interference signal may be a first IMT interference signal, the second interference signal may be a second IMT interference signal, the interference canceller may be an IMT interference canceller, and the parameter adjuster may be an IMT interference parameter adjuster.
In the embodiment of the present disclosure, the air-to-ground communication base station 600 may further include an air-to-ground communication signal receiving amplifier 603, an interference receiving amplifier 604, an air-to-ground communication receiving channel 607, and an air-to-ground communication baseband processing unit 608.
Wherein, the air-to-ground communication signal receiving amplifier 603 may be an ATG signal receiving amplifier, the interference receiving amplifier 604 may be an IMT interference receiving amplifier, the air-to-ground communication receiving channel 607 may be an ATG receiving channel, and the air-to-ground communication baseband processing unit 608 may be an ATG baseband processing unit; the IMT interference canceller is respectively connected with the ATG signal receiving amplifier and the ATG receiving channel, and the ATG receiving channel is connected with the ATG baseband processing unit.
In the embodiment of the present disclosure, the IMT interference received through the first antenna 601 is a first IMT interference, and the IMT interference received through the second antenna 602 is a second IMT interference; the first antenna 601, the air-to-ground communication signal receiving amplifier 603, the air-to-ground communication receiving channel 607, and the air-to-ground communication baseband processing unit 608 in the related art are all mixed with the first IMT interference.
In the disclosed embodiment, the interference receiving amplifier 604 receives and amplifies the second IMT interference received from the second antenna 602 and outputs the amplified second IMT interference to the parameter adjuster 606.
In the embodiment of the present disclosure, the parameter adjuster 606 adjusts the amplitude and phase of the second IMT interference output from the interference receiving amplifier 604 based on the control signal sent from the interference canceller 605, and outputs the amplitude and phase adjusted second IMT interference to the interference canceller 605.
In the disclosed embodiment, the input signal 1 of the interference canceller 605 comes from the air-to-ground communication signal receiving amplifier 603, mixed with the first IMT interference; input signal 2 is from parameter adjuster 606 with a second IMT disturbance; since the ATG signal is an intermittent signal, when there is no ATG signal and only IMT interference, the interference canceller 605 compares the amplitude and phase of IMT interference from two paths of inputs, that is, compares the amplitude and phase of the first IMT interference with the amplitude and phase of the second IMT interference, sends the amplitude difference and phase difference of the two paths of IMT interference to the parameter adjuster 606 as output control signals, controls the adjustment of the amplitude and phase of the second interference signal, achieves that the amplitude and phase of IMT interference of the two paths of inputs of the interference canceller 606 are the same through several closed loop adjustments, and records and maintains the amplitude adjustment value and the phase adjustment value for the amplitude and phase of the second IMT interference, respectively; when there is an ATG signal in which IMT interference is mixed, the interference canceller 605 subtracts the amplitude and phase of the input signal 1 (ATG signal+imt interference) and the input signal 2 (IMT interference after amplitude and phase adjustment), respectively, to cancel IMT interference, and improve the ATG uplink performance.
In some exemplary embodiments of the present disclosure, the first antenna 601 is further configured to receive an air uplink signal, where the air uplink signal is mixed with a third interference signal sent by a ground terminal, and the second antenna 602 is further configured to receive a fourth interference signal sent by the ground terminal; the parameter adjuster 606 is further configured to perform parameter adjustment on the fourth interference signal according to the target parameter adjustment value, so as to obtain an adjusted fourth interference signal; the interference canceller 605 is further configured to cancel the third interference signal in the air uplink signal by using the adjusted fourth interference signal, so as to obtain a target uplink signal.
In some exemplary embodiments of the present disclosure, the parameter adjustment control signal includes an amplitude adjustment control signal and a phase adjustment control signal, the amplitude adjustment control signal including an amplitude adjustment value, the phase adjustment control signal including a phase adjustment value; wherein the interference canceller 605 is further configured to: determining an amplitude adjustment control signal according to the difference between the amplitude of the first interference signal and the amplitude of the second interference signal, and determining a phase adjustment control signal according to the difference between the phase of the first interference signal and the phase of the second interference signal; judging whether the amplitude adjustment value and the phase adjustment value are smaller than a preset value or not; wherein the parameter adjuster 606 is further configured to: the amplitude of the second interference signal is adjusted according to the amplitude adjustment control signal, and the phase of the second interference signal is adjusted according to the phase adjustment control signal.
In some exemplary embodiments of the present disclosure, the interference canceller 605 is further configured to: and performing subtraction processing on the space uplink signal and the adjusted fourth interference signal to obtain a target uplink signal.
In some exemplary embodiments of the present disclosure, the air uplink signal includes an uplink signal transmitted by an air terminal, which is an air-to-ground broadband communication ATG terminal.
In some exemplary embodiments of the present disclosure, the interference receiving amplifier 604 is configured to perform signal amplification processing on the first interference signal, to obtain an amplified first interference signal; performing signal amplification processing on the second interference signal to obtain an amplified second interference signal; and determining a parameter adjustment control signal according to the amplified first interference signal and the amplified second interference signal.
It should be noted that the block diagrams shown in the above figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor terminals and/or microcontroller terminals.
Fig. 7 is a schematic diagram of an electronic device according to an exemplary embodiment. It should be noted that the electronic device shown in fig. 7 is only an example, and should not impose any limitation on the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 7, the electronic apparatus 700 includes a Central Processing Unit (CPU) 701, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 702 or a program loaded from a storage section 708 into a Random Access Memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the electronic device 700 are also stored. The CPU 701, ROM 702, and RAM 703 are connected to each other through a bus 704. An input/output (I/O) interface 705 is also connected to bus 704.
The following components are connected to the I/O interface 705: an input section 706 including a keyboard, a mouse, and the like; an output portion 707 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage section 708 including a hard disk or the like; and a communication section 709 including a network interface card such as a LAN card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. The drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 710 as necessary, so that a computer program read therefrom is mounted into the storage section 708 as necessary.
In particular, according to embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 709, and/or installed from the removable medium 711. The above-described functions defined in the system of the present disclosure are performed when the computer program is executed by a Central Processing Unit (CPU) 701.
It should be noted that the computer readable medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, terminal device, or apparatus, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, terminal device, or apparatus. In the present disclosure, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, terminal device, or apparatus. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. The described units may also be provided in a processor, for example, described as: a processor includes a transmitting unit, an acquiring unit, a determining unit, and a first processing unit. The names of these units do not constitute a limitation on the unit itself in some cases, and for example, the transmitting unit may also be described as "a unit that transmits a picture acquisition request to a connected server".
As another aspect, the present disclosure also provides a computer-readable storage medium that may be included in the electronic device described in the above embodiments; or may exist alone without being incorporated into the electronic device. The computer-readable storage medium carries one or more programs which, when executed by the electronic device, cause the electronic device to implement the methods described in the embodiments below. For example, the electronic device may implement the steps shown in fig. 2.
According to one aspect of the present disclosure, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the methods provided in the various alternative implementations of the above-described embodiments.
It should be understood that any number of elements in the drawings of the present disclosure are for illustration and not limitation, and that any naming is used for distinction only and not for limitation.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A method for implementing interference cancellation, comprising:
receiving a first interference signal sent by a ground terminal through a first antenna, and receiving a second interference signal sent by the ground terminal through a second antenna;
determining a parameter adjustment control signal according to the first interference signal and the second interference signal;
judging whether the parameter adjustment control signal meets a preset condition or not;
Under the condition that the parameter adjustment control signal does not meet the preset condition, parameter adjustment is carried out on the second interference signal according to the parameter adjustment control signal;
and determining a target parameter adjustment value for the second interference signal under the condition that the parameter adjustment control signal meets the preset condition.
2. The method as recited in claim 1, further comprising:
receiving an air uplink signal through the first antenna, wherein the air uplink signal is mixed with a third interference signal sent by the ground terminal, and receiving a fourth interference signal sent by the ground terminal through the second antenna;
performing parameter adjustment on the fourth interference signal according to the target parameter adjustment value to obtain an adjusted fourth interference signal;
and eliminating the third interference signal in the air uplink signal by using the adjusted fourth interference signal to obtain a target uplink signal.
3. The method according to claim 1 or 2, wherein the parameter adjustment control signal comprises an amplitude adjustment control signal comprising an amplitude adjustment value and a phase adjustment control signal comprising a phase adjustment value;
Wherein determining a parameter adjustment control signal from the first and second interfering signals comprises:
determining the amplitude adjustment control signal according to the difference value between the amplitude of the first interference signal and the amplitude of the second interference signal, and determining the phase adjustment control signal according to the difference value between the phase of the first interference signal and the phase of the second interference signal;
wherein, judging whether the parameter adjustment control signal meets a preset condition comprises:
judging whether the amplitude adjustment value and the phase adjustment value are smaller than a preset value or not;
wherein, according to the parameter adjustment control signal, parameter adjustment is performed on the second interference signal, including:
and adjusting the amplitude of the second interference signal according to the amplitude adjustment control signal, and adjusting the phase of the second interference signal according to the phase adjustment control signal.
4. The method of claim 2, wherein performing cancellation processing on the third interference signal in the air uplink signal using the adjusted fourth interference signal to obtain a target uplink signal, comprising:
and carrying out subtraction processing on the space uplink signal and the adjusted fourth interference signal to obtain the target uplink signal.
5. The method of claim 2, wherein the air uplink signal comprises an uplink signal transmitted by an air terminal, the air terminal being an air-to-ground communication ATG terminal.
6. The method of claim 1, wherein determining a parameter adjustment control signal from the first and second interfering signals comprises:
performing signal amplification processing on the first interference signal to obtain an amplified first interference signal;
performing signal amplification processing on the second interference signal to obtain an amplified second interference signal;
and determining a parameter adjustment control signal according to the amplified first interference signal and the amplified second interference signal.
7. The method of claim 1, wherein the ground terminal is an international mobile telecommunications IMT terminal, the first interfering signal is a first IMT interfering signal, and the second interfering signal is a second IMT interfering signal.
8. A space-to-ground communication base station, comprising: the antenna comprises a first antenna, a second antenna, an interference canceller and a parameter adjuster;
the first antenna is used for receiving a first interference signal sent by the ground terminal;
The second antenna is used for receiving a second interference signal sent by the ground terminal;
the interference canceller is used for determining a parameter adjustment control signal according to the first interference signal and the second interference signal, judging whether the parameter adjustment control signal meets a preset condition, and sending the parameter adjustment control signal to the parameter adjuster when the parameter adjustment control signal does not meet the preset condition; determining a target parameter adjustment value for the second interference signal if the parameter adjustment control signal meets the preset condition;
the parameter adjuster is used for adjusting parameters of the second interference signal according to the parameter adjustment control signal and sending the adjusted second interference signal to the interference canceller.
9. An electronic device, comprising:
at least one processor;
storage means for storing at least one program which, when executed by the at least one processor, causes the at least one processor to implement the method of any one of claims 1 to 7.
10. A computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the method according to any of claims 1 to 7.
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