CN112383346B - Method and device for realizing satellite broadcast channel - Google Patents
Method and device for realizing satellite broadcast channel Download PDFInfo
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- CN112383346B CN112383346B CN202011289522.XA CN202011289522A CN112383346B CN 112383346 B CN112383346 B CN 112383346B CN 202011289522 A CN202011289522 A CN 202011289522A CN 112383346 B CN112383346 B CN 112383346B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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- H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
Abstract
The invention provides a method and a device for realizing a satellite broadcast channel, which relate to the technical field of satellite communication and comprise the following steps: carrying out wave position division on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to a preset wave position; dividing a main phased array of a target communication satellite into a preset number of sub-arrays; the broadcasting signal is sent to a plurality of preset wave positions by utilizing the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beams transmitted by the main phased array, so that the problem of realizing the broadcasting channel by adopting the dynamic spot beams is solved, and the technical advantages of small system overhead occupied by the broadcasting channel and high space utilization rate are achieved.
Description
Technical Field
The present invention relates to the technical field of satellite communications, and in particular, to a method and an apparatus for implementing a satellite broadcast channel.
Background
In the era of rapid development of terrestrial networks, satellite networks should be positioned to effectively supplement and extend terrestrial networks. By combining the characteristic of wide satellite communication coverage, the satellite user has the geographical characteristics of large dispersion and small concentration. In order to meet the distribution characteristics of satellite users, the satellite load also adopts a dynamic spot beam technology. When there is a user demand, a dynamic spot beam gazing at the user is generated. The dynamic spot beam can simultaneously serve a plurality of scattered areas by adopting a space multiplexing or time/space/frequency multiplexing combined mode, and the flexible matching of the satellite service capacity and the user requirement is realized. Under the condition of the same power consumption, the dynamic spot beams can effectively improve the landing power spectrum density of a service area, effectively increase the service range of a single satellite, and improve the service efficiency of the frequency and the power of a satellite constellation system, thereby achieving the purpose of reducing the cost of the single satellite and the overall construction Cost (CAPEX) of the constellation system. Meanwhile, the dynamic spot beam has the flexibility of space/time/frequency three-dimensional resource scheduling, can flexibly avoid the interference with GSO and NGSO from the space/time/frequency three-dimensional resource scheduling, and provides more effective means for the coordination of network data.
When the satellite load adopts dynamic spot beams, the design of the satellite communication system is changed from the traditional coverage pursuit to the pursuit of the service range, the number of the dynamic spot beams available in the service range and the service capability of each spot beam. In order to avoid frequency interference between GSO and NGSO constellation systems with network priority, a newly designed satellite communication system also requires that the function of a broadcast channel in the traditional satellite communication is realized by using dynamic spot beams.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method and an apparatus for implementing a satellite broadcast channel, so as to solve the problem of implementing a broadcast channel by using a dynamic spot beam in a satellite communication system without an omni-directional or regional broadcast beam, and have the technical advantages of low overhead occupied by the broadcast channel and high space utilization.
In a first aspect, an embodiment of the present invention provides a method for implementing a satellite broadcast channel, including: wave position division is carried out on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to one preset wave position, and the target communication satellite can emit at least one dynamic spot beam covering the preset wave position; dividing the main phased array of the target communication satellite into a preset number of sub-arrays; and according to a preset polling strategy, sending broadcast signals to a plurality of preset wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beams transmitted by the main phased array, wherein the second preset wave position is a preset wave position corresponding to a sub area except for the sub area corresponding to the first preset wave position in the plurality of sub areas.
Further, the transmitting broadcast signals to a plurality of predetermined wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beam transmitted by the main phased array includes: transmitting a broadcast signal to a first predetermined wave position by using the sub-dynamic spot beams transmitted by the preset number of sub-arrays, wherein the first predetermined wave position is a predetermined wave position corresponding to a sub-area, of the plurality of sub-areas, of which the distance from the central point of the service area under the satellite is smaller than a preset distance; and sending a broadcast signal to a second predetermined wave position by using the main dynamic spot wave beam emitted by the main phased array, wherein the second predetermined wave position is a predetermined wave position corresponding to a sub-area except the sub-area corresponding to the first predetermined wave position in the plurality of sub-areas.
Further, after a broadcast signal is sent to a target predetermined wave position in a preset time slot, a service signal is sent to a terminal in a sub-area corresponding to the target predetermined wave position in a staring manner by using a main dynamic spot beam and a time division multiplexing technology which are transmitted by the main phased array, wherein the target predetermined wave position is any one of the plurality of predetermined wave positions, and the preset time slot is the residence time of the dynamic spot beam in one predetermined wave position.
Further, the satellite service area is an area determined after the broadcasting channel of the target communication satellite scans a predetermined wave position.
In a second aspect, an embodiment of the present invention further provides an apparatus for implementing a satellite broadcast channel, where the apparatus includes: the device comprises a first dividing unit, a second dividing unit and a first transmitting unit, wherein the first dividing unit is used for carrying out wave position division on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, and one sub-area corresponds to a preset wave position; the second dividing unit is used for dividing the main phased array of the target communication satellite into a preset number of sub-arrays; the first transmitting unit is configured to transmit a broadcast signal to a plurality of predetermined wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beam transmitted by the main phased array according to a preset polling policy, where the second predetermined wave position is a predetermined wave position corresponding to a sub area other than the sub area corresponding to the first predetermined wave position in the plurality of sub areas.
Further, the first transmitting unit is configured to: transmitting a broadcast signal to a first predetermined wave position by using the sub-dynamic spot beams transmitted by the preset number of sub-arrays, wherein the first predetermined wave position is a predetermined wave position corresponding to a sub-area, of the plurality of sub-areas, of which the distance from the central point of the service area under the satellite is smaller than a preset distance; and sending a broadcast signal to a second predetermined wave position by using the main dynamic spot wave beam emitted by the main phased array, wherein the second predetermined wave position is a predetermined wave position corresponding to a sub-area except the sub-area corresponding to the first predetermined wave position in the plurality of sub-areas.
Further, the apparatus further comprises: and a second transmitting unit, configured to, after the first transmitting unit transmits a broadcast signal to a target predetermined wave position, respectively transmit, by using a main dynamic point beam transmitted by the main phased array, a service signal to a terminal in a sub-area corresponding to the target predetermined wave position in a staring manner according to a preset policy, where the target predetermined wave position is any one of the plurality of predetermined wave positions.
Further, the satellite service area is an area determined after the broadcasting channel of the target communication satellite scans a predetermined wave position.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory and a processor, where the memory is used to store a program that supports the processor to execute the method in the first aspect, and the processor is configured to execute the program stored in the memory.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method in the first aspect.
In the embodiment of the invention, wave position division is carried out on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to a predetermined wave position; dividing a main phased array of a target communication satellite into a preset number of sub-arrays; the method comprises the steps of utilizing sub dynamic spot beams transmitted by a preset number of sub arrays and main dynamic spot beams transmitted by a main phased array to transmit broadcast signals to a plurality of preset wave positions, dividing the main phased array into the preset number of sub arrays, enabling the sub arrays to be parallel at the same time, and transmitting the broadcast signals to partial sub areas in an under-satellite service area according to a preset wave position polling mode, so that the purposes of reducing the cost of a broadcast channel and improving the space utilization rate of the dynamic spot beams are achieved, the problem that the broadcast channel is realized by utilizing the dynamic spot beams in a satellite communication system without the omnidirectional or regional broadcast beams is solved, the cost of the broadcast channel is reduced, and the technical effect of improving the space utilization rate of the dynamic spot beams is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a method for implementing a satellite broadcast channel according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a target communication satellite after division of an under-satellite service area is completed according to an embodiment of the present invention;
fig. 3 is a schematic diagram of dynamic spot beam transmission of broadcast signals and service signals according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a main phased array including 4 sub-arrays according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an implementation apparatus of a satellite broadcast channel according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
The first embodiment is as follows:
in accordance with an embodiment of the present invention, there is provided an embodiment of a method for implementing a satellite broadcast channel, it being noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that presented herein.
Fig. 1 is a flowchart of a method for implementing a satellite broadcast channel according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
step S102, wave position division is carried out on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to one preset wave position, and the target communication satellite can emit at least one dynamic spot beam covering the preset wave position;
specifically, the target communication satellite in the present application is a communication satellite in a satellite communication system that is realized by using dynamic spot beams, and the satellite communication system changes from the traditional coverage pursuit to the pursuit of the service range, the number of dynamic spot beams available in the service range, and the service capability of each spot beam.
Compared with the existing satellite communication system, the satellite communication system which adopts the dynamic spot beam for communication under the condition of the same power consumption can effectively improve the landing power spectrum density of a service area, effectively increase the service range of a single satellite and improve the service efficiency of the frequency and the power of a satellite constellation system, thereby achieving the purpose of reducing the cost of the single satellite and the overall construction Cost (CAPEX) of the constellation system. Meanwhile, the dynamic spot beam has the flexibility of space/time/frequency three-dimensional resource scheduling, can flexibly avoid the interference with GSO and NGSO from the space/time/frequency three-dimensional resource scheduling, and provides more effective means for the coordination of network data.
Step S104, dividing the main phased array of the target communication satellite into a preset number of sub-arrays;
it should be noted that the preset number may be set by an operator according to actual situations, and is not specifically limited in this application.
Step S106, according to a preset polling strategy, transmitting broadcast signals to a plurality of preset wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beams transmitted by the main phased array, wherein the preset number of sub arrays transmit the broadcast signals to the plurality of preset wave positions in a mode of transmitting the sub dynamic spot beams in parallel.
Specifically, the broadcast channel which scans according to the preset wave position and the dynamic spot wave beam of the staring user adopt time division multiplexing to the same wave beam, in order to reduce the expense of the broadcast channel, a single phased array which realizes the dynamic spot wave beam is divided into a plurality of sub-arrays, the plurality of sub-arrays are adopted to poll the preset wave position simultaneously in parallel, and the space utilization rate of the dynamic spot wave beam is improved.
In the embodiment of the invention, wave position division is carried out on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to a predetermined wave position; dividing a main phased array of a target communication satellite into a preset number of sub-arrays; the method has the advantages that the main phased array is divided into the sub-arrays with the preset number, the sub-arrays can simultaneously and parallelly send the broadcast signals to partial sub-areas in the service area under the satellite in a preset wave polling mode, the problem that the broadcast channel is realized by using the dynamic spot beams in a satellite communication system without the omnidirectional or regional broadcast beams is solved, the expense of the broadcast channel is reduced, and the technical effect of improving the space utilization rate of the dynamic spot beams is achieved.
In this embodiment of the present invention, step S106 further includes the following steps:
step S11, sending a broadcast signal to a first predetermined wave position by using the sub dynamic spot beams transmitted by the predetermined number of sub arrays, where the first predetermined wave position is a predetermined wave position corresponding to a sub area of the plurality of sub areas where a distance from a central point of the service area under the satellite is smaller than a predetermined distance;
step S12, sending a broadcast signal to a second predetermined wave position by using the main dynamic spot beam emitted by the main phased array, where the second predetermined wave position is a predetermined wave position corresponding to a sub-area other than the sub-area corresponding to the first predetermined wave position in the plurality of sub-areas.
It should be noted that the preset number of sub-arrays send broadcast signals to the first predetermined wave position in a manner of transmitting sub-dynamic spot beams in parallel.
In addition, it should be further noted that, in the embodiment of the present invention, the method further includes:
step S108, after a broadcast signal is sent to a target predetermined wave position in a preset time slot, a service signal is sent to a terminal in a sub-area corresponding to the target predetermined wave position in a staring mode by using a main dynamic point wave beam and a time division multiplexing technology which are transmitted by the main phased array, wherein the target predetermined wave position is any one of the plurality of predetermined wave positions, and the preset time slot is the residence time of the dynamic point wave beam in one predetermined wave position.
In the application, the service range of the target communication satellite is determined by the broadcast channel which is scanned according to the preset wave position, and the dynamic spot beams of the staring terminal are utilized to provide service for a plurality of users by combining the time-division fast beam hopping technology.
The above method will be described in detail below.
For a communication satellite with only dynamic spot beams, the sub-satellite service area can be pre-divided into sub-satellite service areas, and the sub-satellite service areas after the division are shown in fig. 2.
Each small hexagon in fig. 2 can be regarded as a region (i.e., a sub-region) that can be covered by a dynamic spot beam, and one sub-region corresponds to one predetermined wave position. If a single satellite only has one dynamic spot beam, and the dynamic spot beam is used for realizing the broadcast signal coverage of the whole service area under the satellite, the dynamic spot beam is required to be used for transmitting signals to each preset wave position in a polling mode, the minimum residence time of the dynamic spot beam at each preset wave position is set to be Ts, the coverage area under the satellite has N preset wave positions in total, and the occupied time of polling once is N x Ts.
The dynamic spot beam is used to transmit the service signal of the user in addition to the broadcast signal, and the allocation scheme of the dynamic spot beam for transmitting the broadcast signal and the service signal is shown in fig. 3.
In fig. 3, N is the number of predetermined broadcast wave bits in a single satellite coverage area, M is the number of Ts allocated to multi-user service transmission by a single antenna array, and the minimum time for a phased array antenna to reside in one wave bit can be as long as Ts equal to 25 uS. In order to meet the requirement of the communication-in-motion service on the alignment of the antenna pointing direction of the received broadcast signal (the broadcast signal is also used as a beacon signal), the period of the satellite terminal receiving the broadcast signal is required to be less than T, and the highest requirement on T is 5 mS. When polling predetermined broadcast wave bits is achieved with a single dynamic spot beam with a Ts dwell time, having Ts x (N + M) T, the number of Ts that can be allocated to multiple users can be deduced as M T/Ts-N.
The broadcast wave bit is planned in time and frequency so that the terminal can receive the service channel or the broadcast channel at a certain moment, and thus, the single-channel terminal can receive the service and the broadcast signal in a time-sharing manner.
In fig. 3, K is the number of users that the antenna array can gaze at simultaneously, and K is less than or equal to M (when the user transmission capacity is large, a single user can occupy multiple minimum beam dwell time slots). In this case, the overhead ratio of the broadcast channel is (N/T) × Ts, and it can be seen from this formula that the larger N is, the larger the overhead ratio of the broadcast channel is. If a single satellite can transmit broadcast signals with L dynamic spot beams at the same time, the broadcast channel overhead ratio can be reduced to (N/TL) × Ts.
The on-satellite phased-array antenna is constrained by engineering implementation, and generally the minimum residence time has a lower limit, so that the minimum granularity of transmitting beams is limited, and the content of the broadcast signals needing to be transmitted is not much, so that the transmission of the broadcast signals by using the minimum granularity still has margin during engineering implementation. To further reduce the overhead of broadcast signals, the transmitting phased array of the satellite may be designed with a sub-array structure as shown in fig. 4.
When the main array is composed of four sub-arrays, the formed beam is the main beam having the largest EIRP (the peak-to-average ratio of the single beam signal is low). When the four sub-arrays form beams respectively and independently, 4 sub-beams with independent directions can be formed (the peak-to-average ratio of single-beam signals is low, the complexity of the four sub-arrays on a phase-shifting network is not increased much), the EIRP of the sub-beams is 12dB lower than that of the main beam, and the coverage area of the sub-beams is 4 times that of the main beam at the moment.
In the application scene of the medium orbit NGSO satellite, the field angle covered by the satellite is smaller, and the difference between the EIRP and the G/T of the wave beam generated by the phased array antenna at the single satellite coverage edge and the subsatellite point is smaller. The main beam is a dynamic spot beam for bearing user services, the sub-beams can be real-time tracking beams of staring users or dynamic spot beams scanned at different wave positions, and the strategy of beam adjustment depends on the distribution of the users. In this scenario, the sub-beams are used to implement broadcast channels in a polling manner at predetermined wave positions within the service area. When the sub-beams are used for polling, the coverage area of the sub-beams is 4 times of that of the main beam, so that the predetermined wave position of the sub-beams is only 1/4 of the predetermined wave position designed according to the main beam. The polling of the predetermined wave position can be realized by 4 sub-beams in parallel, so when the broadcast channel is realized by four sub-beams, the overhead of the broadcast channel can be reduced by 16 times, and the cost is that the link budget of the broadcast channel is improved by 12 dB. Because the information amount of the broadcast channel is far smaller than that of the service channel, the problem can be solved by changing a modulation mode or adopting technical means such as spread spectrum and the like. If the system pursues better broadcast channel margin, the main array can also be formed by 2 or 3 sub-arrays, when the main array is formed by 2 sub-arrays, the EIRP is reduced by 6dB, and the overhead of the broadcast channel is reduced by 4 times; when the main array is composed of 3 sub-arrays, the EIRP is reduced by 9.5dB, and the overhead of the broadcast channel is reduced by 9 times.
In a low-orbit NGSO satellite application scene, in order to increase the coverage range of a single satellite, the coverage field angle is larger, the equivalent aperture of the phased array antenna is reduced along with the increase of the field angle, and assuming that the coverage field angle is 60 degrees, the equivalent area is reduced to half, and the equivalent EIRP is reduced by 3 dB. When considering the effect of the earth curvature, the transmission distance will increase by a factor of two and the signal attenuation will increase by about 10 dB. The channel degrades at low elevation angles and the signal strength at the cell edge decreases by about 12dB compared to the sub-satellite point.
Specifically, if the periphery of the coverage area of the main phased array of the target communication satellite is formed by 18 predetermined wave positions, and other areas are formed by 16 predetermined wave positions, 34 broadcasting predetermined wave positions are in total. The peripheral preset wave position is reduced by 12dB due to the reduction of the equivalent aperture of the antenna array and the increase of the distance, the peripheral 18 preset wave position wave beams are still covered by the main array wave beam, and the number of broadcast wave bits is unchanged. The other 16 wave positions are covered by the sub-beams formed by the 1/4 array, and the covering area of the sub-beams is 4 times of that of the main beam, so that the broadcasting preset wave position number is reduced to 4. When four sub-beams are simultaneously transmitted in parallel, the transmission of the broadcast channel to the internal predetermined wave position can be completed only by occupying one broadcast wave position time slot, so that the polling of the broadcast channel can be realized by using the dynamic spot beam only by using 19 Ts, and the service can be transmitted at other time. The service channel can adopt the main beam as a dynamic spot beam, and the communication system should fully utilize the characteristic of signal intensity change and utilize the ACM technology to improve the service throughput of the whole system.
In order to further reduce the system overhead occupied by the broadcast channel, the method can be realized by increasing the receiving period of the broadcast channel, and the cost is that the period T of the satellite terminal for receiving the broadcast signal is increased.
The above description is given by taking a target communication satellite as a single-satellite single-main beam as an example, and is also applicable to an application scenario of a single-satellite multi-main beam. When the number of main beams of a single satellite is increased, the service capacity of the single satellite is improved. Since the overhead of a single satellite for a broadcast channel is fixed, the increase in the number of main beams also directly reduces the overhead of implementing a broadcast channel using this method.
Example two:
the embodiment of the present invention further provides an implementation apparatus for a satellite broadcast channel, where the implementation apparatus for a satellite broadcast channel is used to execute the implementation method for a satellite broadcast channel provided in the foregoing content of the embodiment of the present invention, and the following is a detailed description of the implementation apparatus for a satellite broadcast channel provided in the embodiment of the present invention.
As shown in fig. 5, fig. 5 is a schematic diagram of the implementation apparatus of the satellite broadcast channel, where the implementation apparatus of the satellite broadcast channel includes: a first dividing unit 10, a second dividing unit 20 and a first transmitting unit 30.
The first dividing unit 10 is configured to perform wave position division on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, where one sub-area corresponds to one predetermined wave position, and the target communication satellite can transmit at least one dynamic spot beam;
the second dividing unit 20 is configured to divide the main phased array of the target communication satellite into a preset number of sub-arrays;
the first transmitting unit 30 is configured to transmit broadcast signals to a plurality of predetermined wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beam transmitted by the main phased array according to a preset polling policy, where the preset number of sub arrays transmit broadcast signals to the plurality of predetermined wave positions in a manner of transmitting the sub dynamic spot beams in parallel.
In the embodiment of the invention, wave position division is carried out on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to a predetermined wave position; dividing a main phased array of a target communication satellite into a preset number of sub-arrays; the method has the advantages that the main phased array is divided into the sub-arrays with the preset number, the sub-arrays can simultaneously and parallelly send the broadcast signals to partial sub-areas in the service area under the satellite in a preset wave polling mode, the problem that the broadcast channel is realized by using the dynamic spot beams in a satellite communication system without the omnidirectional or regional broadcast beams is solved, the expense of the broadcast channel is reduced, and the technical effect of improving the space utilization rate of the dynamic spot beams is achieved.
Preferably, the first transmitting unit is configured to: transmitting a broadcast signal to a first predetermined wave position by using the sub-dynamic spot beams transmitted by the preset number of sub-arrays, wherein the first predetermined wave position is a predetermined wave position corresponding to a sub-area, of the plurality of sub-areas, of which the distance from the central point of the service area under the satellite is smaller than a preset distance; and sending a broadcast signal to a second predetermined wave position by using the main dynamic spot wave beam emitted by the main phased array, wherein the second predetermined wave position is a predetermined wave position corresponding to a sub-area except the sub-area corresponding to the first predetermined wave position in the plurality of sub-areas.
Preferably, the apparatus further comprises: and a second transmitting unit, configured to transmit, in a preset time slot, a broadcast signal to a target predetermined wave position, and then transmit, in a staring manner, a service signal to a terminal in a sub-area corresponding to the target predetermined wave position by using a main dynamic spot beam and a time division multiplexing technique transmitted by the main phased array, where the target predetermined wave position is any one of the plurality of predetermined wave positions, and the preset time slot is a dwell time of the dynamic spot beam at one wave position.
Preferably, the satellite service area is an area determined by scanning a predetermined wave position through a broadcast channel of the target communication satellite.
Example three:
an embodiment of the present invention further provides an electronic device, including a memory and a processor, where the memory is used to store a program that supports the processor to execute the method described in the first embodiment, and the processor is configured to execute the program stored in the memory.
Referring to fig. 6, an embodiment of the present invention further provides an electronic device 100, including: a processor 60, a memory 61, a bus 62 and a communication interface 63, wherein the processor 60, the communication interface 63 and the memory 61 are connected through the bus 62; the processor 60 is arranged to execute executable modules, such as computer programs, stored in the memory 61.
The Memory 61 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 63 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used.
The bus 62 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 6, but that does not indicate only one bus or one type of bus.
The memory 61 is used for storing a program, the processor 60 executes the program after receiving an execution instruction, and the method executed by the process or the defined apparatus disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 60, or implemented by the processor 60.
The processor 60 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 60. The Processor 60 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 61, and the processor 60 reads the information in the memory 61 and, in combination with its hardware, performs the steps of the above method.
Example four:
the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program performs the steps of the method in the first embodiment.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A method for implementing a satellite broadcast channel, comprising:
wave position division is carried out on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to one preset wave position, and the target communication satellite can emit at least one dynamic spot beam covering the preset wave position;
dividing the main phased array of the target communication satellite into a preset number of sub-arrays;
according to a preset polling strategy, transmitting broadcast signals to a plurality of preset wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beams transmitted by the main phased array, wherein the preset number of sub arrays transmit the broadcast signals to the plurality of preset wave positions in a mode of transmitting the sub dynamic spot beams in parallel;
the method for sending broadcast signals to a plurality of predetermined wave positions by using the sub dynamic spot beams transmitted by the sub arrays with the preset number and the main dynamic spot beams transmitted by the main phased array comprises the following steps:
transmitting a broadcast signal to a first predetermined wave position by using the sub-dynamic spot beams transmitted by the preset number of sub-arrays, wherein the first predetermined wave position is a predetermined wave position corresponding to a sub-area, of the plurality of sub-areas, of which the distance from the central point of the service area under the satellite is smaller than a preset distance;
and sending a broadcast signal to a second predetermined wave position by using the main dynamic spot wave beam emitted by the main phased array, wherein the second predetermined wave position is a predetermined wave position corresponding to a sub-area except the sub-area corresponding to the first predetermined wave position in the plurality of sub-areas.
2. The method of claim 1, further comprising:
and after a broadcast signal is sent to a target preset wave position in a preset time slot, sending a service signal to a terminal in a sub-area corresponding to the target preset wave position in a staring mode by using a main dynamic spot wave beam and a time division multiplexing technology which are transmitted by the main phased array, wherein the target preset wave position is any one of the preset wave positions, and the preset time slot is the residence time of the dynamic spot wave beam in one preset wave position.
3. The method of claim 1,
the satellite service area is an area determined after a broadcast channel of the target communication satellite scans a predetermined wave position.
4. An apparatus for implementing a satellite broadcast channel, comprising: a first dividing unit, a second dividing unit, and a first transmitting unit, wherein,
the first dividing unit is used for performing wave position division on an under-satellite service area of a target communication satellite to obtain a plurality of sub-areas, wherein one sub-area corresponds to one preset wave position, and the target communication satellite can transmit at least one dynamic spot beam covering the preset wave position;
the second dividing unit is used for dividing the main phased array of the target communication satellite into a preset number of sub-arrays;
the first transmitting unit is configured to transmit broadcast signals to a plurality of predetermined wave positions by using the sub dynamic spot beams transmitted by the preset number of sub arrays and the main dynamic spot beam transmitted by the main phased array according to a preset polling strategy, where the preset number of sub arrays transmit broadcast signals to the plurality of predetermined wave positions in a manner of transmitting the sub dynamic spot beams in parallel;
wherein the first transmitting unit is configured to:
transmitting a broadcast signal to a first predetermined wave position by using the sub-dynamic spot beams transmitted by the preset number of sub-arrays, wherein the first predetermined wave position is a predetermined wave position corresponding to a sub-area, of the plurality of sub-areas, of which the distance from the central point of the service area under the satellite is smaller than a preset distance;
and sending a broadcast signal to a second predetermined wave position by using the main dynamic spot wave beam emitted by the main phased array, wherein the second predetermined wave position is a predetermined wave position corresponding to a sub-area except the sub-area corresponding to the first predetermined wave position in the plurality of sub-areas.
5. The apparatus of claim 4, further comprising:
and a second transmitting unit, configured to transmit, in a preset time slot, a broadcast signal to a target predetermined wave position, and then transmit, in a staring manner, a service signal to a terminal in a sub-area corresponding to the target predetermined wave position by using a main dynamic spot beam and a time division multiplexing technique transmitted by the main phased array, where the target predetermined wave position is any one of the plurality of predetermined wave positions, and the preset time slot is a residence time of the dynamic spot beam at one predetermined wave position.
6. The apparatus of claim 4,
the satellite service area is an area determined after a broadcast channel of the target communication satellite scans a predetermined wave position.
7. An electronic device comprising a memory for storing a program that enables a processor to perform the method of any of claims 1 to 3 and a processor configured to execute the program stored in the memory.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of the preceding claims 1 to 3.
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| CN114884554B (en) * | 2021-05-17 | 2023-06-23 | 银河航天(北京)网络技术有限公司 | Satellite communication method, satellite and satellite system |
| CN114124166A (en) * | 2021-11-25 | 2022-03-01 | 海能达通信股份有限公司 | Satellite communication method and satellite |
| CN116209063A (en) * | 2021-11-30 | 2023-06-02 | 华为技术有限公司 | Method and communication device for scanning broadcast beam |
| CN115052359B (en) * | 2022-06-20 | 2023-04-07 | 中国人民解放军32039部队 | Data transmission method and device, electronic equipment and storage medium |
| CN116112921B (en) * | 2022-11-29 | 2023-09-19 | 中国人民解放军32039部队 | Space target positioning method and device and electronic equipment |
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