CN114449437A - Interference processing method, device and equipment and readable storage medium - Google Patents

Interference processing method, device and equipment and readable storage medium Download PDF

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Publication number
CN114449437A
CN114449437A CN202011127114.4A CN202011127114A CN114449437A CN 114449437 A CN114449437 A CN 114449437A CN 202011127114 A CN202011127114 A CN 202011127114A CN 114449437 A CN114449437 A CN 114449437A
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satellite system
signal
satellite
notification
interference avoidance
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CN114449437B (en
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康绍莉
缪德山
韩波
孙韶辉
王映民
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to PCT/CN2021/118768 priority patent/WO2022083367A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

The invention discloses an interference processing method, an interference processing device, interference processing equipment and a readable storage medium, and relates to the technical field of communication to ensure the smooth operation of satellite communication. The method comprises the following steps: determining whether interference avoidance needs to be performed on a signal of a second satellite system; and avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance. The embodiment of the invention can ensure the smooth operation of satellite communication.

Description

Interference processing method, device and equipment and readable storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an interference processing method, apparatus, device, and readable storage medium.
Background
In the prior art, a non-geostationary Orbit satellite (NGSO) needs to perform frequency avoidance on a GSO (geostationary Orbit satellite). Conventionally, GSO is deployed on the equatorial plane, and therefore, when an NGSO satellite operating in the same frequency band, such as a medium or low orbit, runs on the equatorial plane, a GSO terminal receives a GSO satellite signal and an NGSO satellite signal having the same or similar elevation angle. Since NGSO satellites have a lower altitude relative to GSO satellites, meaning less path loss, signals transmitted by NGSO satellites are easily received by GSO terminals.
In this case, interference avoidance to the GSO satellite needs to be considered. However, the conventional low-orbit satellite system avoids interference with the high-orbit satellite system, and is directed to a case where the low-orbit satellite uses a fixed beam. However, as the technology develops, more and more low-orbit satellite communication systems no longer use the fixed beam mode, and more existing NGSO satellite systems besides the high-orbit satellite deployed in the equatorial plane need to give interference protection, and in these cases, the prior art has no solution for avoiding interference.
Disclosure of Invention
The embodiment of the invention provides an interference processing method, an interference processing device, interference processing equipment and a readable storage medium, which are used for ensuring the smooth operation of satellite communication.
In a first aspect, an embodiment of the present invention provides an interference processing method, which is applied to a first satellite system, where the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning manner of beam hopping or beam sweeping; the method comprises the following steps:
determining whether interference avoidance needs to be performed on a signal of a second satellite system;
and avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
Wherein the determining whether interference avoidance is required for signals of the second satellite system comprises:
calculating a first distance between the sub-satellite point of the first satellite system and the sub-satellite point of the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system when the first distance is less than or equal to a first threshold.
Wherein the determining whether interference avoidance is required for signals of the second satellite system comprises:
detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system if the signal strength is greater than or equal to a second threshold.
Wherein the detecting the signal strength of the signal of the second satellite system at each current operating beam or wave position of the first satellite system includes:
and detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system in combination with the beam coverage range of the second satellite system.
Wherein the method further comprises:
receiving a first notification of the terminal served by the first satellite system, wherein the first notification comprises a detection result of the terminal served by the first satellite system on the signal of the second satellite system at each current working beam or wave position of the first satellite system;
and determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal detection result indicates that the signal strength of the second satellite system is greater than or equal to a third threshold value.
Wherein the signal to avoid the second satellite system comprises at least one of:
receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system;
reducing the transmission power of the first satellite system on each current working beam or wave position;
and turning off signals aiming at each current working beam or wave position of the first satellite system.
Wherein the method further comprises:
sending a second notification to a terminal serviced by the first satellite system, the second notification including the first operating frequency.
Wherein the method further comprises:
sending a third notification to a third satellite system, the third notification including information of the first satellite system for causing the third satellite system to make supplemental coverage to the first satellite system;
wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system.
Wherein the method further comprises:
and sending a fourth notification to a terminal served by the first satellite system, wherein the fourth notification includes information of a target beam or wave position of a third satellite system, and the beam coverage of the third satellite system is the same as that of the first satellite system, but the working frequency of the third satellite system is different from that of the second satellite system.
In a second aspect, an embodiment of the present invention provides an interference processing apparatus, which is applied to a first satellite system, where the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning manner of beam hopping or beam sweeping; the device comprises:
the first determination module is used for determining whether interference avoidance needs to be carried out on signals of the second satellite system;
and the first processing module is used for avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
In a third aspect, an embodiment of the present invention provides an interference processing apparatus, which is applied to a first satellite system, where the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning manner of beam hopping or beam sweeping; the apparatus comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:
determining whether interference avoidance needs to be performed on a signal of a second satellite system;
and avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
calculating a first distance between an undersatellite point of the first satellite system and an undersatellite point of the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system when the first distance is less than or equal to a first threshold.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system if the signal strength is greater than or equal to a second threshold.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
and detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system in combination with the beam coverage range of the second satellite system.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
receiving a first notification sent by a terminal served by the first satellite system, wherein the first notification comprises a detection result of the terminal on a signal of the second satellite system at each working beam or wave position of the first satellite system;
and determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal detection result indicates that the signal strength of the second satellite system is greater than or equal to a third threshold value.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system;
reducing the transmission power of the first satellite system on each current working beam or wave position;
and turning off signals aiming at each current working beam or wave position of the first satellite system.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
sending a second notification to a terminal serviced by the first satellite system, the second notification including the first operating frequency.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
sending a third notification to a third satellite system, the third notification including information of the first satellite system for causing the third satellite system to make supplemental coverage to the first satellite system;
wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system.
Wherein the processor is further configured to read the program in the memory and execute the following processes:
sending a fourth notification to a terminal served by the first satellite system, wherein the fourth notification includes information of a target beam or a wave position of a third satellite system, and the beam coverage of the third satellite system is the same as that of the first satellite system, but the working frequency of the third satellite system is different from that of the second satellite system;
and receiving or transmitting signals by using the target wave beams or wave positions according to the information of the target wave beams or wave positions.
In a fourth aspect, an embodiment of the present invention provides a readable storage medium for storing a program, where the program, when executed by a processor, implements the steps in the interference processing method according to the first aspect.
In the embodiment of the invention, when the first satellite system is the first NGSO satellite system adopting a beam scanning mode of beam hopping or beam sweeping, whether the second satellite system has interference or not can be determined, and the interference avoidance is carried out under the condition that the interference exists. Therefore, by using the scheme of the embodiment of the invention, when the first satellite system is the first NGSO satellite system adopting a beam scanning mode of beam hopping or beam sweeping, the interference of the first satellite system to the second satellite system can be avoided, thereby ensuring the normal communication of the first satellite system and the second satellite system.
Drawings
Fig. 1 is a flowchart of an interference processing method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of interference between satellites;
fig. 3 is a block diagram of an interference processing apparatus according to an embodiment of the present invention;
fig. 4 is a structure of an interference processing apparatus according to an embodiment of the present invention.
Detailed Description
The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
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 a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart of an interference processing method according to an embodiment of the present invention, where the method is applicable to a first satellite system, where the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning manner of beam hopping or beam sweeping. Specifically, the method may be applied to a network-side device of the first satellite system, such as a satellite carrying a base station function. As shown in fig. 1, the method comprises the following steps:
step 101, determining whether interference avoidance needs to be performed on a signal of a second satellite system.
Wherein the second satellite system comprises a GSO system, or comprises a NGSO satellite system different from the first satellite system, such as an Iridium satellite system.
The NGSO satellite system different from the first satellite system may be an NGSO satellite system adopting a beam scanning mode of a fixed beam, or an NGSO satellite system adopting a beam scanning mode of a beam hopping or beam sweeping. In a specific application, the first satellite system and the second satellite system are in the same frequency band.
In the embodiment of the present invention, the network side device of the first satellite system may determine whether to perform interference avoidance on the signal of the second satellite system in at least the following ways.
(1) And calculating a first distance between the satellite points of the first satellite system and the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system, and determining that the interference avoidance needs to be performed on the signal of the second satellite system under the condition that the first distance is smaller than or equal to a first threshold value.
In practical applications, the network-side device may be preset with information related to the second satellite system, such as a location, a beam coverage, an operating frequency, and the like of the second satellite system. Therefore, the network-side device may calculate a first distance between the satellite-to-satellite point of the first satellite system and the satellite-to-satellite point of the second satellite system, by combining preset information and ephemeris information of the first satellite system.
And if the first distance is smaller than or equal to a first threshold value, determining that the signal of the second satellite system needs to be subjected to interference avoidance, otherwise, not performing interference avoidance. Wherein the first threshold value can be set according to needs.
(2) And detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system. Determining that interference avoidance needs to be performed on a signal of the second satellite system if the signal strength is greater than or equal to a second threshold.
If the network-side device has preset therein information related to a second satellite system, in this step, the network-side device may detect, in combination with a beam coverage of the second satellite system, signal strength of a signal of the second satellite system on each working beam or wave position of the first satellite system. That is, the network side device performs signal interception of the second satellite system on each currently operating beam or wave position, and determines whether the beam or wave position needs to perform interference avoidance according to the signal strength of the second satellite system.
If the network-side device does not have information about the second satellite system set in advance, in this step, the network-side device performs detection on all possible working beams or wave positions. That is, the network side device performs signal measurement of the second satellite system on each currently operating beam or wave position, and determines whether the beam or wave position needs to be interference-avoided according to the signal strength of the second satellite system.
Wherein the second threshold value can be set according to requirements.
In addition, the network side equipment can also determine whether interference avoidance needs to be carried out according to the report of the terminal served by the first satellite system.
Specifically, the network side device may receive a first notification of the terminal served by the first satellite system, where the first notification includes a detection result of the terminal served by the first satellite system on a signal of the second satellite system at each current operating beam or wave position of the first satellite system, and determines that interference avoidance needs to be performed on the signal of the second satellite system when the signal detection result indicates that the signal strength of the second satellite system is greater than or equal to a third threshold. Wherein the third threshold value can be set according to requirements.
In practical applications, a terminal served by a first satellite system may detect a signal of a second satellite system at each working beam or wave position of the first satellite system according to pre-configuration or indication of the network side device.
If the terminal is preset with the relevant information of the second satellite system, the terminal may detect the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system in combination with the beam coverage of the second satellite system. That is, the terminal performs signal interception of the second satellite system at each currently operating beam or wave position, obtains an interception result, and reports the interception result to the network side device. If the terminal is not preset with the relevant information of the second satellite system, the terminal detects on all possible working beams or wave positions. That is, the terminal performs signal measurement of the second satellite system at each currently operating beam or wave position, obtains a measurement result, and reports the measurement result to the network side device.
And 102, avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
In embodiments of the present invention, the meaning of avoiding may include avoiding or reducing interference from the first satellite system to the second satellite system by taking some action. In the embodiment of the present invention, the manner of avoiding the signal of the second satellite system may at least include the following:
(1) receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system.
Specifically, the operating frequencies of the first satellite system in the respective operating beams or wave positions are obtained, and a different frequency from the first satellite system is used for transmitting and receiving the operating beams or wave positions.
In this case, the network-side device may further send a second notification to the terminal served by the first satellite system, where the second notification includes the first operating frequency, so as to ensure that the terminal performs signal transceiving.
(2) And reducing the transmission power of the first satellite system on the current working beams or wave positions.
Specifically, for each working beam or wave position of the first satellite system, the reduced power transmission is adopted, so that the connection of services is maintained but the speed is reduced.
(3) And turning off signals aiming at each current working beam or wave position of the first satellite system.
Specifically, for each current operating beam or wave position of the first satellite system, a signal is turned off (i.e., not transmitted), for example, one or more beams may be turned off, and the turning off may be a control beam or a data beam.
In this case, to ensure smooth communication, the method may further include:
and the network side equipment sends a third notice to a third satellite system, wherein the third notice comprises the information of the first satellite system and is used for enabling the third satellite system to carry out supplementary coverage on the first satellite system. Wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system. The information of the first satellite system may be, for example, an operating frequency of the first satellite system, or the like. Meanwhile, the network side device may further send a fourth notification to the terminal served by the first satellite system within the beam or wave position that is turned off, where the fourth notification includes information of a target beam or wave position of a third satellite system, so that the terminal served by the first satellite system is accessed to the target beam or wave position.
Specifically, the network side device notifies the third satellite system of information such as its own frequency, and notifies the terminal in the closed beam to access to a designated beam of the third satellite system (for example, the third satellite system is a satellite system having the same coverage area as the first satellite system but having no conflict with the first satellite system in terms of frequency resources), and the designated beam of the third satellite system performs supplementary coverage, thereby maintaining service continuity.
It can be seen from the above description that, with the solution of the embodiment of the present invention, when the first satellite system is the first NGSO satellite system adopting the beam scanning manner of beam hopping or beam sweeping, interference of the first satellite system to the second satellite system can be avoided, thereby ensuring normal communication of the first satellite system and the second satellite system.
Without loss of generality, it is assumed that N GSO systems are already running on a certain frequency band, and M NGSO (M, N are both greater than 0) systems are newly built on the frequency band, wherein the NGSO system adopts a beam-hopping or beam-sweeping beam scanning mode. As shown in fig. 2, generally, because the height of the GSO is higher, the coverage of a single beam is wider, and multiple NGSO beams can be accommodated. Suppose there are 2 UEs (User Equipment) in the GSO system, which can all receive signals from the GSO and NGSO. For UE1, because the signal from the NGSO has a larger elevation angle, the signal is relatively weak, so there is no need to consider the interference effect of the NGSO signal on UE 1; for UE2, the signal from NGSO and the signal from GSO have similar elevation angles, and the signal is relatively strong, so the interference effect of NGSO signal on UE2 needs to be considered, and interference avoidance needs to be done.
In the following embodiments, the first satellite system is an NGSO system using a beam scanning method of beam hopping or beam sweeping, and the second satellite system is a GSO system.
In the interference processing method of the embodiment of the invention, the NGSO system detects the position of the interference caused by the GSO, and then the NGSO system carries out signal avoidance at the detected interference position. Specifically, the NGSO system determines the beam direction or wave position of the NGSO satellite system that needs to avoid interference, and then takes measures such as adjusting frequency or reducing transmission power to effectively avoid interference to the GSO satellite.
In one embodiment, the NGSO system determines whether a distance between an undersatellite point of the NGSO satellite and an undersatellite point of the GSO satellite is less than a preset threshold. If the number is smaller than the preset value, interference avoidance is required. For example, the NGSO system determines whether the NGSO satellite is currently co-sited with the GSO satellite. And if the under-satellite point areas are shared, the corresponding wave beams of the under-satellite points of the NGSO satellite are the interference position areas of the GSO system. Or, the NGSO system determines whether there is an overlapping area covered by beams of the NGSO satellite and the GSO satellite, and if so, it indicates that the corresponding overlapping beam of the NGSO is unavailable.
Then, in this case, the NGSO satellite may replace the operating frequency of the sub-satellite spot corresponding beam, so that the new frequency is not the same frequency as the GSO; or, the NGSO satellite can reduce the signal transmission Power of the beam corresponding to the off-satellite point, so that the NGSO signal received by the GSO terminal of the beam corresponding to the off-satellite point meets the requirement of the EPFD (Equivalent Power Flux Density); or the NGSO satellite stops signal transmission of the beam corresponding to the off-satellite point, and the network side equipment informs other NGSO satellites which are not co-satellite with the GSO satellite to cover the area of the beam corresponding to the off-satellite point.
Similarly, if the NGSO satellite system finds that the beams of the NGSO satellite and the GSO satellite cover the overlapping area, the working frequency of the corresponding beam of the NGSO satellite can be replaced or the power of the signal transmitted by the NGSO satellite can be reduced or the signal transmitted by the corresponding beam of the NGSO satellite can be stopped.
In one embodiment, the network side device of the NGSO satellite monitors or measures a GSO signal, where the monitored/measured signal includes a signal sent by a terminal of the GSO or the network side device, and determines whether the GSO signal exists according to the GSO signal strength, and further determines a location area of an NGSO satellite coverage area corresponding to the GSO signal. When the network side equipment of the NGSO satellite does not have prior information such as frequency, wave beams and the like used by a GSO system, all possible wave beam directions and corresponding frequency points are intercepted or measured; if the prior information exists, the specific detection can be carried out in the specific beam direction and frequency point.
The NGSO satellite network may use a dedicated receiving beam to monitor the GSO signal, or may reuse an existing data receiving beam to monitor the GSO signal.
If the signal strength of the GSO is monitored to be larger than a certain threshold value (which can be set according to needs), the interference avoidance needs to be carried out. Then the NGSO satellite may change the operating frequency point of the beam in that location area; or the NGSO satellite reduces the signal transmission power of the wave beam in the position area, so that the NGSO signal received by the GSO terminal under the wave beam meets the EPFD requirement; or the NGSO satellite stops transmitting signals on the beam in the location area, and at the same time, the network side device may notify other beams or other satellites not in the location area to cover the area.
In one embodiment, the terminal of the NGSO system monitors or measures the GSO signal in the current beam coverage area of the NGSO satellite, and determines whether the GSO signal exists according to the GSO signal strength. In the process of the terminal interception or measurement of the NGSO, the signal sent by the network side equipment or the terminal of the GSO is intercepted or measured, and whether the signal exists or not and the beam direction from the signal are judged based on the strength of the GSO signal. The content detected by the terminal may include signal strength and/or beam direction. After the terminal detects the GSO signal, the GSO signal is reported to a network side device of the NGSO satellite system, and the network side device determines the subsequent interference avoiding operation.
If the GSO signal exists, the NGSO satellite changes the working frequency of the wave beam; or, the NGSO satellite reduces the signal transmitting power of the wave beam, so that the NGSO signal received by the GSO terminal under the wave beam meets the EPFD requirement; alternatively, the NGSO satellite stops transmitting signals on that beam and the network informs other beams or other satellites to cover the area.
It should be noted that the NGSO system that needs to perform interference avoidance in the above embodiments may be a non-fixed beam satellite communication system that uses swept beams or hopped beams, such as LEO (Low Earth Orbit), MEO (Medium Earth Orbit), and the like, and the GSO system that is to be interference avoided may be a GSO system that is traditionally placed in a narrow sense on an equatorial plane, or may be an established satellite system that needs to perform interference protection in any other position in a broader sense.
It can be seen from the above description that, compared with a scheme for avoiding the GSO system on the equator for the fixed beam low-orbit system, the scheme of the embodiment of the invention can be simultaneously applied to the NGSO systems of non-fixed beams and fixed beams, not only can avoid the interference of the NGSO satellite system to the GSO system of the existing equatorial plane, but also can be widely applied to the NGSO satellite system to avoid any other established satellite system which needs to be subjected to interference avoidance, so that unconditional interference protection measures of the NGSO satellite system to the GSO satellite and the established NGSO satellite system are realized, and smooth communication is ensured.
The embodiment of the invention also provides an interference processing device. Referring to fig. 3, fig. 3 is a structural diagram of an interference processing apparatus according to an embodiment of the present invention. Since the principle of the interference processing apparatus for solving the problem is similar to the interference processing method in the embodiment of the present invention, the implementation of the interference processing apparatus may refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 3, the interference processing apparatus is applied to a network side device of a first satellite system, where the first satellite system is an NGSO satellite system, and the first NGSO satellite system adopts a beam scanning manner of beam hopping or beam sweeping. The interference processing apparatus 300 includes:
a first determining module 301, configured to determine whether interference avoidance needs to be performed on a signal of a second satellite system; a first processing module 302, configured to avoid the signal of the second satellite system if it is determined that interference avoidance needs to be performed on the signal of the second satellite system.
Wherein the meaning of the second satellite system can refer to the description of the previous embodiments.
Optionally, the first determining module 301 may include: the first calculation submodule is used for calculating a first distance between an undersatellite point of the first satellite system and an undersatellite point of the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system; and the first determining submodule is used for determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the first distance is smaller than or equal to a first threshold value.
Optionally, the first determining module 301 may include: the first detection submodule is used for detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system; and the second determining submodule is used for determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal strength is greater than or equal to a second threshold value.
Optionally, the first detection submodule is configured to detect, in combination with the beam coverage of the second satellite system, the signal strength of the signal of the second satellite system on each current operating beam or wave position of the first satellite system.
Optionally, the first determining module 301 may include: a first receiving submodule, configured to receive a first notification of a terminal served by the first satellite system, where the first notification includes a detection result of the terminal served by the first satellite system on a signal of the second satellite system at each current operating beam or wave position of the first satellite system; and the third determining submodule is used for determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal detection result shows that the signal strength of the second satellite system is greater than or equal to a third threshold value.
Optionally, the first processing module 302 is configured to avoid the signal of the second satellite system according to at least one of the following manners:
receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system;
reducing the transmission power of the first satellite system on each current working beam or wave position;
and turning off signals aiming at each current working beam or wave position of the first satellite system.
Optionally, the apparatus may further include:
a first sending module configured to send a second notification to a terminal served by the first satellite system, the second notification including the first operating frequency.
Optionally, the apparatus may further include:
a second sending module, configured to send a third notification to a third satellite system, where the third notification includes information of the first satellite system, and is used to enable the third satellite system to perform supplementary coverage on the first satellite system; wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system.
Optionally, the apparatus may further include:
a third sending module, configured to send a fourth notification to a terminal served by the first satellite system, where the fourth notification includes information of a target beam or a wave position of a third satellite system, and a beam coverage of the third satellite system is the same as a beam coverage of the first satellite system, but an operating frequency of the third satellite system is different from an operating frequency of the second satellite system.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
As shown in fig. 4, the interference processing device according to the embodiment of the present invention is applied to a network side device of a first satellite system, where the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning manner of beam hopping or beam sweeping; the apparatus comprises: the processor 400, which is used to read the program in the memory 420, executes the following processes:
determining whether interference avoidance needs to be performed on a signal of a second satellite system;
and avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
A transceiver 410 for receiving and transmitting data under the control of the processor 400.
Where in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by processor 400, and memory, represented by memory 420, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 410 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.
The processor 410 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.
The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.
The processor 400 is also adapted to read the program and perform the following steps:
calculating a first distance between an undersatellite point of the first satellite system and an undersatellite point of the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system when the first distance is less than or equal to a first threshold.
The processor 400 is also adapted to read the program and perform the following steps:
detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system if the signal strength is greater than or equal to a second threshold.
The processor 400 is also adapted to read the program and perform the following steps:
and detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system in combination with the beam coverage range of the second satellite system.
The processor 400 is also configured to read the program and perform at least one of:
receiving a first notification of the terminal served by the first satellite system, wherein the first notification comprises a detection result of the terminal served by the first satellite system on the signal of the second satellite system at each current working beam or wave position of the first satellite system;
and determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal detection result indicates that the signal strength of the second satellite system is greater than or equal to a third threshold value.
The processor 400 is also configured to read the program and perform at least one of:
receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system;
reducing the transmission power of the first satellite system on each current working beam or wave position;
and turning off signals aiming at each current working beam or wave position of the first satellite system.
The processor 400 is also adapted to read the program and perform the following steps:
sending a second notification to a terminal serviced by the first satellite system, the second notification including the first operating frequency.
The processor 400 is also adapted to read the program and perform the following steps:
sending a third notification to a third satellite system, the third notification including information of the first satellite system for causing the third satellite system to make supplemental coverage to the first satellite system;
wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system.
The processor 400 is also adapted to read the program and perform the following steps:
and sending a fourth notification to a terminal served by the first satellite system, wherein the fourth notification includes information of a target beam or a wave position of a third satellite system, and the beam coverage of the third satellite system is the same as that of the first satellite system, but the working frequency of the third satellite system is different from that of the second satellite system.
The device provided in the embodiment of the present invention may implement the method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
The embodiment of the present invention further provides a readable storage medium, where a program is stored, and when the program is executed by a processor, the program implements each process of the embodiment of the interference processing method, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), Solid State Disk (SSD)), etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With such an understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (20)

1. An interference processing method is applied to a first satellite system, wherein the first satellite system is a first non-geostationary orbit (NGSO) satellite system, and the first NGSO satellite system adopts a beam scanning mode of beam hopping or beam scanning; characterized in that the method comprises:
determining whether interference avoidance needs to be performed on a signal of a second satellite system;
and avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
2. The method of claim 1, wherein the determining whether interference avoidance is required for signals of a second satellite system comprises:
calculating a first distance between an undersatellite point of the first satellite system and an undersatellite point of the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system when the first distance is less than or equal to a first threshold.
3. The method of claim 1, wherein the determining whether interference avoidance is required for signals of a second satellite system comprises:
detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system if the signal strength is greater than or equal to a second threshold.
4. The method of claim 3, wherein said detecting the signal strength of the signal of the second satellite system at each current operating beam or wave position of the first satellite system comprises:
and detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system in combination with the beam coverage range of the second satellite system.
5. The method of claim 1, wherein the determining whether interference avoidance is required for signals of a second satellite system comprises:
receiving a first notification sent by a terminal served by the first satellite system, wherein the first notification comprises a detection result of the terminal served by the first satellite system on a signal of the second satellite system at each current working beam or wave position of the first satellite system;
and determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal detection result indicates that the signal strength of the second satellite system is greater than or equal to a third threshold value.
6. The method of claim 1 or 2 or 3 or 4, wherein the signal to avoid the second satellite system comprises at least one of:
receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system;
reducing the transmission power of the first satellite system on each current working beam or wave position;
and turning off signals aiming at each current working beam or wave position of the first satellite system.
7. The method of claim 6, further comprising:
sending a second notification to a terminal serviced by the first satellite system, the second notification including the first operating frequency.
8. The method of claim 6, further comprising:
sending a third notification to a third satellite system, the third notification including information of the first satellite system for causing the third satellite system to make supplemental coverage to the first satellite system;
wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system.
9. The method of claim 6, further comprising:
and sending a fourth notification to a terminal served by the first satellite system, wherein the fourth notification includes information of a target beam or a wave position of a third satellite system, and the beam coverage of the third satellite system is the same as that of the first satellite system, but the working frequency of the third satellite system is different from that of the second satellite system.
10. An interference processing device is applied to a first satellite system, wherein the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning mode of beam hopping or beam scanning; characterized in that the device comprises:
the first determination module is used for determining whether interference avoidance needs to be carried out on signals of the second satellite system;
and the first processing module is used for avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
11. An interference processing device is applied to a first satellite system, wherein the first satellite system is a first NGSO satellite system, and the first NGSO satellite system adopts a beam scanning mode of beam hopping or beam scanning; the apparatus comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:
determining whether interference avoidance needs to be performed on a signal of a second satellite system;
and avoiding the signal of the second satellite system under the condition that the signal of the second satellite system needs to be subjected to interference avoidance.
12. The apparatus of claim 11, wherein the processor is further configured to read a program in the memory and perform the following:
calculating a first distance between the sub-satellite point of the first satellite system and the sub-satellite point of the second satellite system according to the ephemeris information of the first satellite system and the position information of the second satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system when the first distance is less than or equal to a first threshold.
13. The apparatus of claim 11, wherein the processor is further configured to read a program in the memory and perform the following:
detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system;
determining that interference avoidance needs to be performed on a signal of the second satellite system if the signal strength is greater than or equal to a second threshold.
14. The apparatus of claim 13, wherein the processor is further configured to read a program in the memory and perform the following:
and detecting the signal strength of the signal of the second satellite system on each current working beam or wave position of the first satellite system in combination with the beam coverage range of the second satellite system.
15. The apparatus of claim 11, wherein the processor is further configured to read a program in the memory and perform the following:
receiving a first notification sent by a terminal served by the first satellite system, wherein the first notification comprises a detection result of the terminal on a signal of the second satellite system at each working beam or wave position of the first satellite system;
and determining that the signal of the second satellite system needs to be subjected to interference avoidance under the condition that the signal detection result indicates that the signal strength of the second satellite system is greater than or equal to a third threshold value.
16. The apparatus of claim 11, 12, 13 or 14, wherein the processor is further configured to read a program in the memory and perform the following process:
receiving or transmitting signals by using a first working frequency on each current working beam or wave position of the first satellite system; wherein the first operating frequency is different from an operating frequency of the second satellite system;
reducing the transmission power of the first satellite system on each current working beam or wave position;
and turning off signals aiming at each current working beam or wave position of the first satellite system.
17. The apparatus of claim 16, wherein the processor is further configured to read a program in the memory and perform the following:
sending a second notification to a terminal serviced by the first satellite system, the second notification including the first operating frequency.
18. The apparatus of claim 16, wherein the processor is further configured to read a program in the memory and perform the following:
sending a third notification to a third satellite system, the third notification including information of the first satellite system for causing the third satellite system to make supplemental coverage to the first satellite system;
wherein the beam coverage of the third satellite system is the same as the beam coverage of the first satellite system, but the operating frequency of the third satellite system is different from the operating frequency of the second satellite system.
19. The apparatus of claim 16, wherein the processor is further configured to read a program in the memory and perform the following:
sending a fourth notification to a terminal served by the first satellite system, wherein the fourth notification includes information of a target beam or a wave position of a third satellite system, and the beam coverage of the third satellite system is the same as that of the first satellite system, but the working frequency of the third satellite system is different from that of the second satellite system;
and receiving or transmitting signals by using the target wave beams or wave positions according to the information of the target wave beams or wave positions.
20. A readable storage medium storing a program which, when executed by a processor, performs the steps in the interference processing method according to any one of claims 1 to 9.
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