CN110708110B - Method for avoiding uplink interference of nonsynchronous orbit satellite on synchronous orbit satellite - Google Patents
Method for avoiding uplink interference of nonsynchronous orbit satellite on synchronous orbit satellite Download PDFInfo
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- CN110708110B CN110708110B CN201910952970.4A CN201910952970A CN110708110B CN 110708110 B CN110708110 B CN 110708110B CN 201910952970 A CN201910952970 A CN 201910952970A CN 110708110 B CN110708110 B CN 110708110B
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
- H04B7/18543—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for adaptation of transmission parameters, e.g. power control
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
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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 invention provides a method for realizing uplink interference avoidance of an asynchronous orbit satellite on a synchronous orbit satellite based on beam broadening combined with user migration, simplifies the interference situation, divides beam operation of the satellite into three types, closes, adjusts the size and does not change; the asynchronous orbit satellite is closed in a strong interference area, so that the interference problem in the area can be well avoided; the size of the unsynchronized orbit satellite beam in the weak interference area can be adjusted, the problem of a coverage blind area caused by the closing of the unsynchronized orbit satellite beam can be solved, and the method is simple and easy to implement; and migrating users which possibly cause uplink interference to an adjacent non-geostationary orbit satellite based on the user migration of the beam coverage service area. The invention well solves the uplink interference problem of the asynchronous orbit satellite system to the synchronous orbit satellite system, ensures the service quality of users and is simple and easy to implement.
Description
Technical Field
The invention relates to the field of satellite communication, in particular to an interference avoidance method in the field of satellite co-operation, and more particularly relates to an uplink interference avoidance method of an asynchronous orbit satellite on a synchronous orbit satellite.
Background
Compared with the ground mobile communication, the satellite mobile communication can overcome more complicated geographic environments, can cover a larger range, and has great demands in the fields of aviation, maritime affairs and military affairs. Satellites used for communication include geostationary orbit satellites, also known as high orbit (GEO) satellites, and non-geostationary orbit satellites, also known as medium and low orbit (MEO & LEO) satellites. GEO satellites operate above the equator, stationary with respect to the earth; MEO & LEO satellites are constantly changing in position relative to the earth. In practical applications, the geosynchronous orbit satellite may be located near a connection between the geosynchronous orbit satellite and the non-geosynchronous orbit satellite, and if the two satellites use the same frequency band, the geosynchronous orbit satellite may be interfered by a signal from the ground station of the non-geosynchronous orbit satellite. The International Telecommunications Union (ITU) has associated provisions that require non-geostationary orbit satellites to communicate while taking measures to prevent interference with the geostationary satellites. It is now common to avoid interference by reducing the transmitter power when the non-geostationary orbit satellite travels to a region where it may be affected by the geostationary orbit satellite in a manner that causes the interfering signal power to be below a specified value. However, reducing the power of the transmitter directly results in the reduction of the communication quality of the user, and it is very important how to avoid the uplink interference to the geosynchronous orbit satellite while ensuring the communication quality of the user.
In the prior art, there are some interference avoidance techniques, such as:
a satellite deception jamming identification method and device based on constellation tracks are provided, and application number is CN 201810598924.4.
A management system for the time slot of medium-small satellite is disclosed in CN201811221710.1, which can avoid the interference of adjacent satellite by defining the specific flow of communication time slot distribution between satellite and terminal. The time slot allocation is utilized to realize the full reuse of the resources.
A method for avoiding the interference of synchronous satellites by a regressive orbit satellite constellation and a ground station system is disclosed in the application No. CN 201780001221.2.
CN201710057281.8 provides a method and a device for judging a spectrum sensing blind area for avoiding interference to a synchronous satellite system, aiming at a scene shared by synchronous satellite and non-synchronous satellite systems, the synchronous satellite system is used as a master user to judge whether the spectrum sensing blind area appears in the detection process of the non-synchronous satellite system.
A ground station system and a method for avoiding co-linear interference with a synchronous satellite are disclosed in application No. CN201610293756.9, and the ground station system and the method for avoiding co-linear interference with the synchronous satellite by switching satellites avoid the limitation that the non-synchronous orbit satellite needs to be shut down or the transmitting power is greatly reduced when the co-linear interference occurs, and the ground station satellite communication keeps continuous, thereby improving the availability and the communication capacity of a non-synchronous orbit satellite constellation and realizing the co-frequency coexistence of the non-synchronous orbit satellite and the synchronous orbit satellite.
A method for analyzing mutual interference between satellite communication systems is disclosed in application No. CN 201610587389.3. Analyzing mutual interference between different satellite communication systems by analyzing the relation between a phase trajectory line drawn on a phase plane and an interference protection area, and determining time and phase angles exceeding an interference protection standard; the analysis method is suitable for analyzing the mutual interference among a plurality of satellite communication systems, reflects the change rule of the orbit position in the change of the phase angle, and reduces the number of intermediate variables.
Method and apparatus for avoiding exceeding interference limits of non-geostationary satellite systems, application No. CN201680019582.5, discloses a non-geostationary satellite system wherein each satellite has an antenna (which may be a multi-element antenna) to form a beam pattern, wherein the beam pattern comprises a beam set in the footprint of the satellite, wherein in one implementation, the shape of each beam is substantially elliptical with a minor axis and a major axis, wherein the minor axes are substantially collinear and the major axis is substantially oriented east to west. For the satellite, the power is reduced or turned off for a subset of the set of beams, wherein each beam in the subset is reduced to or below a respective power level such that when a beam is powered above its respective power level, the Equivalent Power Flux Density (EPFD) exceeds the limit at some point on the earth's surface.
Application No. < auxiliary synchronization channel transmission method of global coverage multi-beam satellite LTE >: CN201410031899.3 discloses an auxiliary synchronization channel transmission method for full-domain coverage multi-beam satellite LTE. The method avoids the interference between the S-SCH of different satellites in the full-domain coverage multi-beam satellite LTE system, thereby improving the performance of cell search.
Through analysis, the interference avoidance strategy based on the aspects of constellation tracks, time slot allocation, ground station adjustment and the like in the prior art is found, and the uplink interference avoidance strategy based on the aspect of satellite adjustment, which comprehensively considers the user use quality, is not relatively perfect.
Disclosure of Invention
Therefore, the present invention is directed to overcome the above-mentioned drawbacks of the prior art, and to provide a new method for avoiding uplink interference to a geostationary orbit satellite by a medium-low orbit satellite based on beam broadening, which considers user quality. A method for avoiding uplink interference of an asynchronous orbit satellite on a synchronous orbit satellite comprises the following steps:
s1, determining a signal interference threshold according to the communication channel of the synchronous orbit satellite on the synchronous orbit;
s2, establishing an interference area corresponding to the asynchronous orbit satellite on the ground through the asynchronous satellite based on a signal interference threshold of the synchronous orbit satellite, and dividing the ground latitude into a strong interference area, a weak interference area and an interference-free area from wide to narrow according to the interference area range of the asynchronous orbit satellite;
s3, according to the position of the sub-satellite point of the non-geostationary orbit satellite at the next moment and the region where the non-geostationary orbit satellite is located, closing or widening the wave beam of the non-geostationary orbit satellite is determined;
s4, carrying out user migration according to the closing and widening adjustment condition of the beam of the non-geostationary orbit satellite in the step S3, and migrating the user in the original coverage area of the closed satellite to other non-geostationary orbit satellites covering the area where the user is located;
and S5, migrating users possibly causing uplink interference in the coverage range of the satellite beam with the widened beam to an adjacent non-geostationary orbit satellite in the area covered by the beam without causing the uplink interference.
S6, judging the area of the non-geostationary orbit satellite according to the position of the sub-satellite point at the next moment of the non-geostationary orbit satellite, and simultaneously executing the steps S7 and S8;
s7, judging whether the non-synchronous orbit satellite with the subsatellite point position in the weak interference area is in a closed state or not, if so, opening the non-synchronous orbit satellite based on a beam broadening strategy; if not, no operation is carried out;
s8, judging whether the non-synchronous orbit satellite with the sub-satellite point position in the non-interference area carries out beam broadening operation, if so, restoring the non-synchronous orbit satellite and the corresponding user to a default state; if not, no operation is performed.
Wherein the step S2 includes the following steps:
s21, acquiring a signal interference threshold according to the communication frequency band of the synchronous orbit satellite;
s22, determining an interference area of the non-geostationary orbit satellite according to a signal interference threshold of the synchronous orbit satellite, wherein the interference of the synchronous orbit satellite by uplink transmitted when all users in the interference area of the non-geostationary orbit satellite communicate with the users is larger than the interference threshold;
s23, dividing the ground latitude into a strong interference area, a weak interference area and an interference-free area according to the range of the interference area of the non-geosynchronous orbit satellite from wide to narrow, and determining a strong interference latitude threshold and a weak interference latitude threshold; the non-synchronous orbit satellite with the latitude of the sub-satellite point position smaller than the strong interference latitude threshold value is positioned in a strong interference area, and the coverage range of the wave beam is all an interference area; the position latitude of the sub-satellite point is greater than or equal to the strong interference latitude threshold value and is not greater than the weak interference latitude threshold value, the non-synchronous orbit satellite is positioned in a weak interference area, and part of the beam coverage area is an interference area; the non-synchronous orbit satellite with the satellite down-satellite point position latitude larger than the weak interference latitude threshold value is positioned in an interference-free area, and a wave beam coverage area of the satellite is free of an interference area.
The step S3 includes the following steps:
s31, the network control center judges the position latitude of the subsatellite point of each asynchronous orbit satellite at the next moment according to the ephemeris;
s32, judging the area of each asynchronous orbit satellite at the next moment according to the position of the subsatellite point of each asynchronous orbit satellite at the next moment, which is judged in the step S31;
s33, turning off the non-geostationary orbit satellite in the strong interference area, widening the beam of the non-geostationary orbit satellite in the weak interference area, and increasing the beam coverage, including two steps S331 and S332; s331, broadening synchronous orbit satellite beams of a weak interference area adjacent to a strong interference area to cover the strong interference area; s332, widening the beams of other non-geostationary orbit satellites in a weak interference area which is not adjacent to the strong interference area, and enabling the interference area of each non-geostationary orbit satellite to be simultaneously covered by the non-geostationary orbit satellite and another non-geostationary orbit satellite after widening.
The step S4 includes the following steps:
s41, the network control center fills the information field with the information of the asynchronous orbit satellite set which needs to be closed and the asynchronous orbit satellite set which needs to be beam-expanded, and broadcasts the information to all ground stations through the satellites;
s42, transferring the ground station in the original coverage area of the closed unsynchronized orbit satellite from the original unsynchronized orbit satellite to an adjacent unsynchronized orbit satellite in the area covered by the wave beam;
and S43, judging whether the interference area of the non-geostationary orbit satellite with the expanded beam is covered by the beam of the satellite per se, if so, pointing the ground station deflection antenna in the interference area of the non-geostationary orbit satellite to connect to other non-geostationary orbit satellites with the beam covering the area and the self interference area not in the area, and not adjusting the user in the non-interference area.
Compared with the prior art, the method for avoiding the uplink interference of the asynchronous orbit satellite to the synchronous orbit satellite has the advantage that the method for avoiding the uplink interference of the asynchronous orbit satellite to the synchronous orbit satellite is used for avoiding the interference by combining beam expansion with user migration. The interference situation is simplified, the beam operation of the satellite is divided into three types, and the beam operation is closed, adjusted in size and unchanged; the asynchronous orbit satellite is closed in a strong interference area, so that the interference problem in the area can be well avoided; the size of the unsynchronized orbit satellite beam in the weak interference area can be adjusted, the problem of a coverage blind area caused by the closing of the unsynchronized orbit satellite beam can be solved, and the method is simple and easy to implement; and migrating users which possibly cause uplink interference to an adjacent non-geostationary orbit satellite based on the user migration of the beam coverage service area. The invention well solves the uplink interference problem of the asynchronous orbit satellite system to the synchronous orbit satellite system, ensures the service quality of users and is simple and easy to implement.
Drawings
Embodiments of the invention are further described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of LEO satellite Interference (IA) area setup relative to a GEO satellite in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of the partitioning of interference areas of a LEO satellite with a GEO satellite according to an embodiment of the present invention;
fig. 3 is a schematic diagram of beam closing, beam expanding, and user migration of a LEO satellite according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
For a better understanding of the present invention, the background of the invention is first presented. According to ITU-related regulations it is required that non-geostationary orbits must take measures to prevent interference with geostationary satellites while communicating. It is now common to avoid interference by reducing the transmitter power when the unsynchronized orbiting satellite travels to a region where it may be affected by the geosynchronized orbiting satellite so that the interfering signal power is below a specified value. However, reducing the power of the transmitter directly results in the reduction of the communication quality of the user, and the uplink interference to the geosynchronous orbit satellite cannot be avoided while the communication quality of the user is ensured.
The invention aims to solve the problem of interference of a non-geostationary orbit satellite to a geostationary orbit satellite, provides a method for changing a beam coverage range based on beam closing and broadening and combining user migration to avoid the interference to the geostationary orbit satellite, and in summary, the method comprises the following steps:
b1, establishing an interference area through an ITU coherent protection standard, and judging whether the interference area is completely in the non-geostationary orbit satellite beam;
b2, dividing the synchronous orbit satellite sub-satellite point latitude area on the synchronous orbit into areas with strong interference, weak interference and no interference according to the size of the interference area in the wave beam coverage range of the asynchronous orbit satellite;
b3, judging the area of the nonsynchronous orbit satellite according to the position of the satellite lower point of the nonsynchronous orbit satellite at the next moment, wherein the nonsynchronous orbit satellite in the strong interference area is closed, and the beam of the nonsynchronous orbit satellite in the weak interference area is widened;
b4, migration of users based on beam coverage service area, migration of users that may cause uplink interference to adjacent non-geostationary orbit satellites.
The steps of the present invention will be described in detail with reference to the accompanying drawings and examples.
According to the International Telecommunication Union (ITU) standards for coherent protection, the equivalent power flux density of a ground station for satellite-generated interference signals should not be greater than the signal interference threshold given in table 22-1A to table 22-1E of ITU RR clause 22, the given signal interference threshold being associated with a communication band. If an uplink beam transmitted by a user in a beam of a non-geostationary orbit satellite during communication with the user causes Interference greater than an Interference threshold defined by ITU with respect to a geostationary orbit satellite in a geostationary orbit, an Area in which the user is located is referred to as an Interference Area (IA) range, a ground station in the IA Area transmits a signal to the non-geostationary orbit satellite to interfere with the geostationary orbit satellite, and the IA Area changes due to a change in the position of the non-geostationary orbit satellite. As shown in fig. 1, the time of day is for a low-orbit (LEO) satellite, and the range of the IA area changes as the position of the non-geostationary orbit satellite changes. Interference regions of LEO satellite A, B, C, D, E are established based on interference thresholds of GEO satellites, respectively, and as can be seen in fig. 1, IA region exists for LEO satellite A, B, D and no interference region exists for LEO satellite C, E. The interference area establishment method for Medium Earth Orbit (MEO) satellites is consistent with Low Earth Orbit (LEO) satellites.
All beam coverage areas of LEO satellite a are IA areas, part of IA areas is within beam coverage area of LEO satellite B, and part of IA areas is within beam coverage area of LEO satellite D. The interference area establishment method for Medium Earth Orbit (MEO) satellites is consistent with Low Earth Orbit (LEO) satellites.
Step 2, interference area band division
Dividing the ground latitude into a strong interference area, a weak interference area and an interference-free area according to the range from wide to narrow of an interference area of the non-geosynchronous orbit satellite, and determining a strong interference latitude threshold value and a weak interference latitude threshold value; the non-synchronous orbit satellite with the latitude of the sub-satellite point position smaller than the strong interference latitude threshold value is positioned in a strong interference area, and the coverage range of the wave beam is all an interference area; the position latitude of the substellar point is greater than or equal to the strong interference latitude threshold value and is not greater than the weak interference latitude threshold value, the non-synchronous orbit satellite is in the weak interference area, and part of the beam coverage area is an interference area; the non-synchronous orbit satellite with the satellite down-satellite point position latitude larger than the weak interference latitude threshold value is positioned in an interference-free area, and a wave beam coverage area of the satellite is free of an interference area. k. m is a critical point latitude threshold, k is a strong interference latitude threshold, and m is a weak interference latitude threshold. The area with the latitude smaller than k is divided into areas with strong interference, and when the latitude of the subsatellite point position of the non-geostationary orbit satellite is smaller than k, all areas in the wave beam coverage range are IA areas; when the latitude of the satellite lower point position of the non-geostationary orbit satellite is between k and m, part of the coverage range of the wave beam is an IA area part; and when the latitude of the satellite lower point of the asynchronous orbit satellite is larger than m, no interference area exists in the wave beam coverage range of the asynchronous orbit satellite. As shown in fig. 2, at the time, the latitude of the subsatellite point position of LEO satellite a is less than k, and LEO satellite a is in a strong interference area; the latitude of the position of the satellite E under the LEO satellite B, LEO is larger than k and smaller than m, and the satellite E of the LEO satellite B, LEO is in a weak interference area; LEO satellite C, LEO satellite D, LEO satellite F, LEO satellite G has a sub-satellite position latitude greater than m, LEO satellite C, LEO satellite D, LEO satellite F, LEO satellite G is in a region of no interference. The interference zone division method for Medium Earth Orbit (MEO) satellites is consistent with that of Low Earth Orbit (LEO) satellites.
And step 3, executing a beam widening strategy.
A Network Control Center (NCC) obtains the latitude of the satellite position under the satellite at the next moment from 0 to k, k to m, and m according to the ephemeris, obtains a set of the satellite position under the strong interference area, the weak interference area, and the non-interference area, and makes the following beam broadening strategy:
when the subsatellite point position of the non-geostationary orbit satellite is in a strong interference area, the beam of the non-geostationary orbit satellite is closed, namely the non-geostationary orbit satellite stops communication;
when the subsatellite point position of the asynchronous orbit satellite is in a weak interference area and an interference-free area, the asynchronous orbit satellite adjusts the antenna field angle, widens the wave beam and increases the coverage range of the wave beam.
The latitude of the off-satellite point and the widening angle of the antenna field angle of the non-geostationary orbit satellite adjacent to the strong interference area need to cover users in the strong interference area, and the widening angles of the antenna field angles of the non-geostationary orbit satellites with the latitude of the other off-satellite points in the weak interference area need to ensure that the IA area of the non-geostationary orbit satellite is in the overlapping coverage area of two satellite wave beams after the wave beams are widened.
At the time shown in fig. 3, LEO satellite a in the area of strong interference is turned off, the beams of LEO satellite B and LEO satellite E in the area of weak interference adjacent to LEO satellite a are broadened to cover the area of strong interference, LEO satellite C and LEO satellite F in the area of weak interference not adjacent to LEO satellite a are broadened, so that IA area of LEO satellite B is simultaneously covered by LEO satellite B and LEO satellite C, IA area of LEO satellite E is simultaneously covered by LEO satellite E and LEO satellite F, and the satellites of other interference-free LEO satellite D, LEO satellite G are not adjusted. The beam broadening strategies for Medium Earth Orbit (MEO) satellites are set and implemented in concert with Low Earth Orbit (LEO) satellites.
And 4, executing user migration.
The NCC fills the calculation result into the information field according to the beam broadening strategy in the step 3 and broadcasts the calculation result to all ground stations through the satellite;
adjusting a ground station antenna of a strong interference area, and connecting the ground station antenna from a closed non-geostationary orbit satellite to the non-geostationary orbit satellite of which the wave beam covers the area of the ground station after the wave beam is widened;
traversing the non-geostationary orbit satellite in the weak interference area after the wave beam is widened, judging whether the IA area of the non-geostationary orbit satellite after the wave beam is widened is covered by the wave beam of the satellite of the non-geostationary orbit satellite, if so, pointing the ground station deflection antenna in the interference area of the non-geostationary orbit satellite to be connected to other non-geostationary orbit satellites of which the wave beams cover the area and the self interference area is not in the area. As shown in fig. 3, the ground station deflection antenna in the IA area of LEO satellite a is pointed, and the ground station in this area is connected to LEO satellite B or LEO satellite E according to the beam coverage in this area; connecting a ground station deflection antenna in the IA area of LEO satellite B to LEO satellite C; ground station deflection antennas in the IA region of LEO satellite E are pointed and connected to LEO satellite F. The user migration method for medium orbit (MEO) satellites is consistent with low orbit (LEO) satellites.
Step 5, satellite recovery
A Network Control Center (NCC) judges the area of the non-synchronous orbit satellite according to the position of the sub-satellite point at the next moment of the non-synchronous orbit satellite;
judging whether the non-synchronous orbit satellite with the subsatellite point position in the weak interference area is in a closed state or not, if so, opening the non-synchronous orbit satellite based on a beam broadening strategy; if not, no operation is carried out;
judging whether the non-synchronous orbit satellite with the sub-satellite point position in the non-interference area carries out beam broadening operation or not, and if so, restoring the non-synchronous orbit satellite and a corresponding user to a default state; if not, no operation is performed.
The method for avoiding the uplink interference of the asynchronous orbit satellite to the synchronous orbit satellite provided by the invention is to avoid the interference by adopting a method based on beam expansion and user migration. The interference situation is simplified, the beam operation of the satellite is divided into three types, and the beam operation is closed, adjusted in size and unchanged; the asynchronous orbit satellite is closed in a strong interference area, so that the interference problem in the area can be well avoided; the size of the unsynchronized orbit satellite beam in the weak interference area can be adjusted, the problem of a coverage blind area caused by the closing of the unsynchronized orbit satellite beam can be solved, and the method is simple and easy to implement; and migrating users which possibly cause uplink interference to an adjacent non-geostationary orbit satellite based on the user migration of the beam coverage service area. The invention well solves the uplink interference problem of the asynchronous orbit satellite system to the synchronous orbit satellite system, ensures the service quality of users and is simple and easy to implement.
It should be noted that, although the steps are described in a specific order, the steps are not necessarily performed in the specific order, and in fact, some of the steps may be performed concurrently or even in a changed order as long as the required functions are achieved.
The present invention may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied therewith for causing a processor to implement various aspects of the present invention.
The computer readable storage medium may be a tangible device that retains and stores instructions for use by an instruction execution device. The computer readable storage medium may include, for example, but is not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: 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), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. A method for avoiding uplink interference of an unsynchronized orbit satellite on a synchronous orbit satellite is characterized by comprising the following steps:
s1, determining a signal interference threshold according to the communication channel of the synchronous orbit satellite on the synchronous orbit;
s2, establishing an interference area corresponding to the asynchronous orbit satellite on the ground through the asynchronous satellite based on a signal interference threshold of the synchronous orbit satellite, and dividing the ground latitude into a strong interference area, a weak interference area and an interference-free area from wide to narrow according to the interference area range of the asynchronous orbit satellite;
s3, according to the position of the off-satellite point at the next moment of the non-geostationary orbit satellite and the region where the non-geostationary orbit satellite is located, closing the non-geostationary orbit satellite in the strong interference region and widening the beam of the non-geostationary orbit satellite in the weak interference region to increase the coverage of the beam;
s4, carrying out user migration according to the closing and widening adjustment condition of the beam of the non-geostationary orbit satellite in the step S3, and migrating the user in the original coverage area of the closed satellite to other non-geostationary orbit satellites covering the area where the user is located;
and S5, migrating the user causing the uplink interference in the satellite beam coverage range with the expanded beam to an adjacent non-geostationary orbit satellite in the area covered by the beam without causing the uplink interference.
2. The method for avoiding uplink interference of a non-geostationary orbit satellite with a geostationary orbit satellite according to claim 1, further comprising the steps of:
s6, judging the area of the non-geostationary orbit satellite according to the position of the sub-satellite point at the next moment of the non-geostationary orbit satellite, and simultaneously executing the steps S7 and S8;
s7, judging whether the non-synchronous orbit satellite with the subsatellite point position in the weak interference area is in a closed state or not, if so, opening the non-synchronous orbit satellite based on a beam broadening strategy; if not, no operation is carried out;
s8, judging whether the non-synchronous orbit satellite with the sub-satellite point position in the non-interference area carries out beam broadening operation, if so, restoring the non-synchronous orbit satellite and the corresponding user to a default state; if not, no operation is carried out.
3. The method of claim 1, wherein the method for avoiding uplink interference from the geostationary orbit satellite to the geostationary orbit satellite,
the step S2 includes the following steps:
s21, acquiring a signal interference threshold according to the communication frequency band of the synchronous orbit satellite;
s22, determining an interference area of the non-geostationary orbit satellite according to a signal interference threshold of the synchronous orbit satellite, wherein the interference of the synchronous orbit satellite by uplink transmitted when all users in the interference area of the non-geostationary orbit satellite communicate with the users is larger than the interference threshold;
s23, dividing the ground latitude into a strong interference area, a weak interference area and an interference-free area according to the range of the interference area of the non-geosynchronous orbit satellite from wide to narrow, and determining a strong interference latitude threshold and a weak interference latitude threshold; the non-synchronous orbit satellite with the latitude of the sub-satellite point position smaller than the strong interference latitude threshold value is positioned in a strong interference area, and the coverage range of the wave beam is all an interference area; the position latitude of the substellar point is greater than or equal to the strong interference latitude threshold value and is not greater than the weak interference latitude threshold value, the non-synchronous orbit satellite is in the weak interference area, and part of the beam coverage area is an interference area; the non-synchronous orbit satellite with the satellite down-satellite point position latitude larger than the weak interference latitude threshold value is positioned in an interference-free area, and a wave beam coverage area of the satellite is free of an interference area.
4. The method for avoiding uplink interference of a non-geostationary orbit satellite with a geostationary orbit satellite according to claim 1, wherein the step S3 comprises the steps of:
s31, the network control center judges the position latitude of the subsatellite point of each asynchronous orbit satellite at the next moment according to the ephemeris;
s32, judging the area of each asynchronous orbit satellite at the next moment according to the position of the subsatellite point of each asynchronous orbit satellite at the next moment, which is judged in the step S31;
and S33, turning off the non-geostationary orbit satellite in the strong interference area, and widening the beam of the non-geostationary orbit satellite in the weak interference area, thereby increasing the beam coverage.
5. The method as claimed in claim 4, wherein the step S33 includes the steps of:
s331, broadening synchronous orbit satellite beams of a weak interference area adjacent to a strong interference area to cover the strong interference area;
s332, widening the beams of other non-geostationary orbit satellites in a weak interference area which is not adjacent to the strong interference area, and enabling the interference area of each non-geostationary orbit satellite to be simultaneously covered by the non-geostationary orbit satellite and another non-geostationary orbit satellite after widening.
6. The method for avoiding uplink interference of a non-geostationary orbit satellite with a geostationary orbit satellite according to claim 1, wherein the step S4 comprises the steps of:
s41, the network control center fills the information field with the information of the asynchronous orbit satellite set which needs to be closed and the asynchronous orbit satellite set which needs to be beam-expanded, and broadcasts the information to all ground stations through the satellites;
s42, transferring the ground station in the original coverage area of the closed non-geosynchronous orbit satellite from the original non-geosynchronous orbit satellite to an adjacent non-geosynchronous orbit satellite in the area where the beam covers;
and S43, judging whether the interference area of the non-geostationary orbit satellite with the expanded beam is covered by the beam of the satellite per se, if so, pointing the ground station deflection antenna in the interference area of the non-geostationary orbit satellite to connect to other non-geostationary orbit satellites with the beam covering the area and the self interference area not in the area, and not adjusting the user in the non-interference area.
7. A computer-readable storage medium having embodied thereon a computer program, the computer program being executable by a processor to perform the steps of the method of any one of claims 1 to 6.
8. A computer device comprising a memory and a processor, a computer program being stored on the memory and being executable on the processor, characterized in that the steps of the method of any of claims 1 to 6 are implemented by the processor when executing the program.
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| CN113517919B (en) * | 2020-04-09 | 2022-12-06 | 中国电信股份有限公司 | Control method and device for gateway station in satellite ground system and satellite ground system |
| CN114449437B (en) * | 2020-10-20 | 2023-05-09 | 大唐移动通信设备有限公司 | Interference processing method, device, equipment and readable storage medium |
| CN113708826B (en) * | 2021-09-03 | 2022-08-02 | 中国电子科技集团公司第五十四研究所 | On-orbit verification method for sharing Ka frequency band interference avoidance strategy |
| CN116566459A (en) * | 2022-01-27 | 2023-08-08 | 大唐移动通信设备有限公司 | Satellite control method, service switching method, device and storage medium |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010045494A1 (en) * | 2000-01-07 | 2001-11-29 | Higgins Robert P. | Method for limiting interference between satellite communications systems |
| CN105744531A (en) * | 2016-02-04 | 2016-07-06 | 中国空间技术研究院 | Inline interference suppression based geostationary orbit (GEO) and non-geostationary orbit (NGEO) communication satellite spectrum sharing method |
| CN106470486A (en) * | 2015-08-19 | 2017-03-01 | 中国移动通信集团公司 | A kind of frequency multiplexing method between high low-orbit satellite and device |
| CN107210805A (en) * | 2014-11-24 | 2017-09-26 | 世界卫星有限公司 | Make the communication satellite system of interference reduction |
| CN107408977A (en) * | 2015-03-20 | 2017-11-28 | 高通股份有限公司 | The dynamic frequency allocation of satellite beams |
| CN107637113A (en) * | 2017-02-17 | 2018-01-26 | 清华大学 | Regression orbit satellite constellation and earth station system evade the method for synchronous satellite interference |
| CN107809298A (en) * | 2017-10-16 | 2018-03-16 | 清华大学 | A kind of method for gso satellite communication system disturb analysis and evade |
| CN107980210A (en) * | 2017-02-17 | 2018-05-01 | 清华大学 | A kind of satellite constellation implementation method for implementing communication using regression orbit |
| CN108712202A (en) * | 2018-05-16 | 2018-10-26 | 清华大学 | Evade the method and satellite communication system of co-channel interference by deflecting antenna direction |
| CN109412682A (en) * | 2018-12-19 | 2019-03-01 | 北京卫星信息工程研究所 | Low rail constellation satellite beams frequency resource allocation method in one kind |
| CN109672469A (en) * | 2018-11-30 | 2019-04-23 | 航天科工空间工程发展有限公司 | Avoiding angle calculation method coexists in a kind of GSO and NGSO satellite frequency spectrum |
| CN110224741A (en) * | 2019-06-06 | 2019-09-10 | 航天科工空间工程发展有限公司 | NGSO satellite constellation and GSO satellite communication system frequency spectrum coexistence method |
| CN110266362A (en) * | 2019-07-04 | 2019-09-20 | 北京邮电大学 | A kind of received disturbance restraining method of group of stars multi-beam based on millimeter wave |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140041164A (en) * | 2012-09-27 | 2014-04-04 | 한국전자통신연구원 | Adaptive satellite power transmission system and method for overcome radio interference |
| CN107064962B (en) * | 2017-01-24 | 2019-11-12 | 广州海格通信集团股份有限公司 | A kind of satellite navigation array antenna with electromagnetic protection |
-
2019
- 2019-10-09 CN CN201910952970.4A patent/CN110708110B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010045494A1 (en) * | 2000-01-07 | 2001-11-29 | Higgins Robert P. | Method for limiting interference between satellite communications systems |
| CN107210805A (en) * | 2014-11-24 | 2017-09-26 | 世界卫星有限公司 | Make the communication satellite system of interference reduction |
| CN107408977A (en) * | 2015-03-20 | 2017-11-28 | 高通股份有限公司 | The dynamic frequency allocation of satellite beams |
| CN106470486A (en) * | 2015-08-19 | 2017-03-01 | 中国移动通信集团公司 | A kind of frequency multiplexing method between high low-orbit satellite and device |
| CN105744531A (en) * | 2016-02-04 | 2016-07-06 | 中国空间技术研究院 | Inline interference suppression based geostationary orbit (GEO) and non-geostationary orbit (NGEO) communication satellite spectrum sharing method |
| CN107980210A (en) * | 2017-02-17 | 2018-05-01 | 清华大学 | A kind of satellite constellation implementation method for implementing communication using regression orbit |
| CN107637113A (en) * | 2017-02-17 | 2018-01-26 | 清华大学 | Regression orbit satellite constellation and earth station system evade the method for synchronous satellite interference |
| CN107809298A (en) * | 2017-10-16 | 2018-03-16 | 清华大学 | A kind of method for gso satellite communication system disturb analysis and evade |
| CN108712202A (en) * | 2018-05-16 | 2018-10-26 | 清华大学 | Evade the method and satellite communication system of co-channel interference by deflecting antenna direction |
| CN109672469A (en) * | 2018-11-30 | 2019-04-23 | 航天科工空间工程发展有限公司 | Avoiding angle calculation method coexists in a kind of GSO and NGSO satellite frequency spectrum |
| CN109412682A (en) * | 2018-12-19 | 2019-03-01 | 北京卫星信息工程研究所 | Low rail constellation satellite beams frequency resource allocation method in one kind |
| CN110224741A (en) * | 2019-06-06 | 2019-09-10 | 航天科工空间工程发展有限公司 | NGSO satellite constellation and GSO satellite communication system frequency spectrum coexistence method |
| CN110266362A (en) * | 2019-07-04 | 2019-09-20 | 北京邮电大学 | A kind of received disturbance restraining method of group of stars multi-beam based on millimeter wave |
Non-Patent Citations (4)
| Title |
|---|
| The research of the frequency interference analysis method for Aerospace TT&C system;LiYing 等;《2015 IEEE 6th International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)》;20160714;全文 * |
| 卫星地球站上下行空间链路干扰分析及规避措施;梁钊 等;《中国有线电视》;20140831(第8期);全文 * |
| 星地一体化网络基于资源分配的干扰协调技术研究;蔺萍;《中国优秀硕士学位论文全文数据库》;20180215(第2期);全文 * |
| 非静止轨道卫星通信系统星座及通信链路设计;唐力群;《中国优秀硕士学位论文全文数据库》;20160215(第2期);全文 * |
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