CN117220758A - Satellite beam jumping verification device and method based on wireless channel simulator - Google Patents
Satellite beam jumping verification device and method based on wireless channel simulator Download PDFInfo
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- CN117220758A CN117220758A CN202311408163.9A CN202311408163A CN117220758A CN 117220758 A CN117220758 A CN 117220758A CN 202311408163 A CN202311408163 A CN 202311408163A CN 117220758 A CN117220758 A CN 117220758A
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- 238000004088 simulation Methods 0.000 claims abstract description 37
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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
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- 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
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Abstract
The invention discloses a satellite beam jump verification device and method based on a wireless channel simulator, comprising the following steps: presetting all wave position information in a base station and a wireless channel simulator; presetting a wave position of a terminal to be accessed in a main control module of a wireless channel simulator; the simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by the GNSS simulator; the base station performs wave position scanning through the ephemeris to obtain wave control information and transmits the wave control information to the wireless channel simulator; the wireless channel simulator calculates whether the current wave beam scans the wave position of the preset terminal according to the ephemeris information and the wave control information, if yes, the simulator opens a connecting channel between the wave beam at the base station side and the terminal; if not, closing the connection channel of the current wave beam and the preset terminal; the ephemeris simulation completes the satellite beam jump verification based on the wireless channel simulator. The invention can realize that the beam hopping strategy of the satellite base station can be rapidly verified without the participation of a phased array antenna.
Description
Technical Field
The invention relates to the field of satellite communication, in particular to a satellite beam jump verification device and method based on a wireless channel simulator.
Background
Satellite communication has the advantages of quick network deployment, no limitation of terrain, global coverage and the like, so that the satellite communication is widely applied to the fields of communication, navigation, weather, survey and the like. With the development of satellite wireless communication and antenna-earth integration technology, MIMO communication technology with phased array antennas has become a standard configuration of satellite loading. Compared with the traditional reflector antenna, the phased array antenna has great advantages in the aspects of beam forming, beam scanning and the like.
The GNSS simulators in the conventional beam-hopping verification scheme can provide the same precise data of the navigation satellites, which acts on both the base station and the radio channel simulators for simulating the synchronization of the data. And the base station baseband unit generates wave control information according to the ephemeris information and all wave position information to control the RRU to realize beam forming and beam hopping.
The design of the phased array antenna in the RRU needs to be designed by system-level consideration, such as array arrangement, beam width, sidelobe suppression, multi-user interference and the like, which can influence the satellite communication performance test. More importantly, the base station baseband vendor may not have RRU (Radio Remote Unit) units.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a satellite beam jump verification method based on a wireless channel simulator, which comprises the following steps:
step one, presetting all wave position information in a base station and a wireless channel simulator; presetting a wave position of a terminal to be accessed in a main control module of a wireless channel simulator;
step two, the simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by the GNSS simulator;
step three, the base station performs wave position scanning through ephemeris to obtain wave control information and transmits the wave control information to the wireless channel simulator;
step four, the wireless channel simulator calculates whether the current wave beam scans the wave position of the preset terminal according to the ephemeris information and the wave control information, if yes, the simulator opens a connecting channel between the wave beam at the base station side and the terminal; if not, closing the connection channel of the current wave beam and the preset terminal;
and fifthly, judging whether ephemeris simulation is finished, if not, returning to the fourth step, otherwise, completing satellite beam jumping verification based on the wireless channel simulator.
Further, the simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by the GNSS simulator, and the simulation system comprises: both sides are required to obtain ephemeris information in advance for receiving and demodulating the satellite, communication is carried out according to the ephemeris time, and simulation of a wireless channel simulator carries out channel simulation according to the ephemeris information; the time synchronization of the base station and the wireless channel simulator is completed through a GNSS simulator, and the GNSS simulator provides UTC time and 1PPS to determine synchronous simulation starting moments of the base station and the wireless channel simulator.
Further, the wireless channel simulator calculates whether the current wave beam scans the preset terminal wave position according to the ephemeris information and the wave control information: the method comprises the steps that a wireless channel simulator calculates geometric position relations of receiving and transmitting ends according to ephemeris information, forming angle information of a phased array on a satellite side for a current terminal is calculated according to the geometric position relations, and if wave control information on a base station side is consistent with the forming angle information of the phased array for the current terminal, a current wave beam is scanned to a preset terminal wave position.
Further, the determining whether the ephemeris simulation is finished includes: when the satellite is transmitted to the satellite by the wireless channel simulator, the satellite cannot be accessed by the ground terminal, and then the ephemeris simulation is finished.
A satellite beam jump verification device based on a wireless channel simulator is applied to the satellite beam jump verification method based on the wireless channel simulator, and comprises a GNSS simulator, the wireless channel simulator and a base station module; the GNSS simulator, the base station module and the wireless channel simulator are sequentially connected.
The beneficial effects of the invention are as follows: according to the technical scheme provided by the invention, the wave beam hopping strategy of the satellite base station can be rapidly verified without the participation of a phased array antenna.
Drawings
FIG. 1 is a flow chart of a satellite beam jump verification method based on a wireless channel simulator;
FIG. 2 is a schematic diagram of a satellite beam hopping verification device based on a wireless channel simulator;
FIG. 3 is a schematic illustration of wave positions;
FIG. 4 is a schematic diagram of a terminal preset wave position information of a simulation scene;
fig. 5 is a schematic view of access of a terminal with a wave position 1 during scanning of a base station;
fig. 6 is a schematic view of access of a terminal of the wave position 11 during scanning of a base station;
fig. 7 is a schematic diagram of no terminal access during scanning of a base station.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
For the purpose of making the technical solution and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention. It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
As shown in fig. 1, a satellite beam hopping verification method based on a wireless channel simulator includes the following steps:
step one, presetting all wave position information in a base station and a wireless channel simulator; presetting a wave position of a terminal to be accessed in a main control module of a wireless channel simulator;
step two, the simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by the GNSS simulator;
step three, the base station performs wave position scanning through ephemeris to obtain wave control information and transmits the wave control information to the wireless channel simulator;
step four, the wireless channel simulator calculates whether the current wave beam scans the wave position of the preset terminal according to the ephemeris information and the wave control information, if yes, the simulator opens a connecting channel between the wave beam at the base station side and the terminal; if not, closing the connection channel of the current wave beam and the preset terminal;
and fifthly, judging whether ephemeris simulation is finished, if not, returning to the fourth step, otherwise, completing satellite beam jumping verification based on the wireless channel simulator.
The simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by a GNSS simulator, namely, both sides need to know the ephemeris information in advance for receiving and demodulating the satellite, and the satellite-ground jump beam simulation is communicated strictly according to the satellite duration. The simulation of the wireless channel simulator also carries out channel simulation according to ephemeris information. Therefore, the strict time synchronization of the base station and the wireless channel simulator needs to be completed by the GNSS simulator, which provides UTC (Universal Time Coodinated) time and 1PPS to determine the synchronous simulation start time of both sides.
The wireless channel simulator calculates whether the current wave beam scans the preset terminal wave position according to the ephemeris information and the wave control information, namely the wireless channel simulator can calculate the geometric position relation of the receiving end and the transmitting end according to the ephemeris information, the forming angle information of the phased array at the satellite side aiming at the current terminal can be calculated according to the geometric position relation, and if the wave control information at the base station side is consistent with the forming angle information of the phased array aiming at the current terminal, the current wave beam is stated to scan the preset terminal wave position.
The judgment of whether the ephemeris simulation is ended refers to whether the ephemeris is completed or not by the wireless channel simulator when the satellite is in shielding time (the earth shields the communication between the satellite and the ground terminal), at this time, the wireless channel simulator can greatly increase transmission attenuation (-300 dB), and the ground terminal cannot access the satellite.
A satellite beam jump verification device based on a wireless channel simulator is applied to the satellite beam jump verification method based on the wireless channel simulator, and comprises a GNSS simulator, the wireless channel simulator and a base station module;
the GNSS simulator, the base station module and the wireless channel simulator are sequentially connected.
Specifically, the jump wave speed verification scheme of the invention is different from the traditional scheme in that no RRU unit exists. The GNSS simulator provides the same precise data as the navigation satellite, which acts on both the base station and the radio channel simulator for time-critical synchronization of the simulation data to prevent mismatch of frame control information and symbol information. The baseband unit of the base station converts the logic beam signal of the baseband into an analog signal through an external DA conversion board and directly inputs the analog signal to the simulator, and meanwhile, the wave control information of the base station is input to the simulator through an optical fiber interface, and the simulator judges whether the current beam is output to a specified terminal or not by combining the current ephemeris information. The base station side realizes the wave beam jump strategy test by converting wave control information and wave beams. The specific steps are as follows:
1) The base station and the wireless channel simulator preset all wave position information, and the schematic diagram is shown in figure 3;
2) Presetting a wave position where an access terminal is required to be positioned in main control software of a channel simulator, and supposing that the terminal is respectively preset with a wave position 1 and a wave position 11, as shown in a diagram of fig. 4;
3) The simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by the GNSS simulator;
4) The base station performs wave position scanning through ephemeris and transmits wave control information to the wireless channel simulator in real time;
5) The wireless channel simulator calculates whether the current wave beam can scan the preset terminal wave position according to the ephemeris information and the wave control information, if so, the simulator opens the wave beam at the base station side and the terminal connecting channel; if not, the connection channel between the current beam and the preset terminal is closed, and the schematic diagrams are shown in fig. 5, 6 and 7.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (5)
1. The satellite beam jump verification method based on the wireless channel simulator is characterized by comprising the following steps of:
step one, presetting all wave position information in a base station and a wireless channel simulator; presetting a wave position of a terminal to be accessed in a main control module of a wireless channel simulator;
step two, the simulation system synchronously starts satellite-ground jump beam simulation according to satellite ephemeris information by the GNSS simulator;
step three, the base station performs wave position scanning through ephemeris to obtain wave control information and transmits the wave control information to the wireless channel simulator;
step four, the wireless channel simulator calculates whether the current wave beam scans the wave position of the preset terminal according to the ephemeris information and the wave control information, if yes, the simulator opens a connecting channel between the wave beam at the base station side and the terminal; if not, closing the connection channel of the current wave beam and the preset terminal;
and fifthly, judging whether ephemeris simulation is finished, if not, returning to the fourth step, otherwise, completing satellite beam jumping verification based on the wireless channel simulator.
2. The method for verifying satellite jumping beam based on wireless channel simulator as defined in claim 1, wherein the simulation system synchronously starts satellite-ground jumping beam simulation according to satellite ephemeris information by the GNSS simulator, comprising: both sides are required to obtain ephemeris information in advance for receiving and demodulating the satellite, communication is carried out according to the ephemeris time, and simulation of a wireless channel simulator carries out channel simulation according to the ephemeris information; the time synchronization of the base station and the wireless channel simulator is completed through a GNSS simulator, and the GNSS simulator provides UTC time and 1PPS to determine synchronous simulation starting moments of the base station and the wireless channel simulator.
3. The method for verifying a satellite beam jump based on a wireless channel simulator according to claim 1, wherein the wireless channel simulator calculates whether the current beam is scanned to a preset terminal wave position according to ephemeris information and wave control information: the method comprises the steps that a wireless channel simulator calculates geometric position relations of receiving and transmitting ends according to ephemeris information, forming angle information of a phased array on a satellite side for a current terminal is calculated according to the geometric position relations, and if wave control information on a base station side is consistent with the forming angle information of the phased array for the current terminal, a current wave beam is scanned to a preset terminal wave position.
4. The method for verifying a satellite beam jump based on a wireless channel simulator according to claim 1, wherein the determining whether the ephemeris simulation is ended comprises: when the satellite is transmitted to the satellite by the wireless channel simulator, the satellite is transmitted to the ground terminal, and the satellite is transmitted to the ground terminal.
5. A satellite beam jump verification device based on a wireless channel simulator, which is characterized by applying the satellite beam jump verification method based on the wireless channel simulator according to any one of claims 1-4, and comprising a GNSS simulator, a wireless channel simulator and a base station module; the GNSS simulator, the base station module and the wireless channel simulator are sequentially connected.
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| CN202311408163.9A CN117220758A (en) | 2023-10-24 | 2023-10-24 | Satellite beam jumping verification device and method based on wireless channel simulator |
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