CN111262615B - Multitask-oriented satellite communication network adaptive compensation method and device - Google Patents

Abstract

Embodiments of the present invention provide a multi-task-oriented satellite communication network adaptive compensation method and device, the method includes: acquiring a task type of a current communication task; determining an overall compensation scheme according to the task type; wherein, the The overall compensation scheme includes: sub-compensation schemes corresponding to each transmission link involved in the current communication task; each transmission link is a laser link or a microwave link; In the link stage, the sub-compensation scheme corresponding to each transmission link is used for communication compensation. In the embodiment of the present invention, according to the task type of the current communication task, a sub-compensation scheme corresponding to each transmission link involved in the current communication task is determined, and in each transmission link stage, the corresponding sub-compensation scheme is used to perform Communication compensation, therefore, improves the performance of network transmissions.

Description

Multitask-oriented satellite communication network adaptive compensation method and device

technical field

The invention relates to the technical field of satellite communication, in particular to a multi-task-oriented satellite communication network adaptive compensation method and device.

Background technique

Figure 1 is the architecture diagram of the satellite communication network. The satellite communication network consists of three parts: the space-based backbone network, the space-based access network and the ground system. Synchronous orbit) satellite and MEO (medium earth orbit, medium earth orbit) satellite are connected through ISL (Inter-Satellite Link, inter-satellite link) technology, responsible for the transmission and distribution of space data, for the connected LEO (medium earth orbit, inter-satellite link) technology , Low Earth Orbit) satellites provide information exchange services; the space-based access network adopts the laser and microwave fusion access scheme, which is composed of the LEO satellite mobile communication constellation, which is connected to the space-based backbone network through ISL, and provides mobile users of the ground system. Spatial Information Service.

In the above-mentioned satellite communication network, there are various transmission links, such as: the inter-satellite link between satellites, the satellite-ground link between the satellite and the ground, specifically, the satellite-ground uplink when the ground communicates with the satellite, The satellite-to-ground downlink when the satellite communicates with the ground. There are some external factors that affect the network transmission performance in the above-mentioned various links. For example, in the inter-satellite link stage, due to the influence of factors such as satellite orbit, satellite attitude drift, and on-board thermal environment changes, the beam aiming angle will exist. A certain deviation; in the satellite-to-ground uplink or satellite-to-ground downlink stage, due to the influence of atmospheric turbulence and other factors, the beam quality of the laser signal received by the receiving end will deteriorate, etc.

At the same time, when the above-mentioned satellite communication network is used for data transmission, there may be various communication tasks, and the types of transmission links involved in different communication tasks are also different. Therefore, for different communication tasks, how to adopt appropriate compensation methods to improve The performance of network transmission is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a multi-task-oriented satellite communication network adaptive compensation method and device, so as to improve the performance of network transmission. The specific technical solutions are as follows:

In a first aspect, an embodiment of the present invention provides a multi-task-oriented satellite communication network adaptive compensation method, including:

Get the task type of the current communication task;

Determine an overall compensation scheme according to the task type; wherein, the overall compensation scheme includes: sub-compensation schemes corresponding to each transmission link involved in the current communication task; each transmission link is a laser link or microwave links;

During the communication process, at each transmission link stage, the sub-compensation scheme corresponding to each transmission link is used to perform communication compensation.

Further, the task types include: a first task type, a second task type, a third task type, a fourth task type, and a fifth task type;

The first task type is: a first ground user accesses a geosynchronous orbit GEO satellite through a low earth orbit LEO satellite or a medium earth orbit MEO satellite in the satellite communication network, and communicates with the second ground user through the GEO satellite. The type of task that sent the data;

The second task type is: a task type in which the third ground user sends data to the fourth ground user through the LEO satellite or the MEO satellite;

The third task type is: a task type in which the fifth ground user sends data to the sixth ground user through the GEO satellite;

The fourth task type is: a task type in which the GEO satellite sends data to the seventh ground user through the LEO satellite or the MEO satellite;

The fifth task type is: the task type in which the GEO satellite directly sends data to the eighth ground user;

When the task type of the current communication task is any one of the first task type, the second task type or the third task type, each transmission link involved in the current communication task They are: satellite-to-ground uplink, inter-satellite link and satellite-to-ground downlink;

When the task type of the current communication task is the fourth task type, each transmission link involved in the current communication task is: an inter-satellite link and a satellite-ground downlink;

When the task type of the current communication task is the fifth task type, the transmission link involved in the current communication task is: satellite-ground downlink.

Further, the sub-compensation schemes corresponding to the satellite-ground uplink include: a first sub-compensation scheme based on adaptive coding technology, a second sub-compensation scheme based on probability shaping technology, and a third sub-compensation scheme based on power adaptive control technology. Sub-compensation scheme and the fourth sub-compensation scheme based on laser beam aiming angle compensation technology;

The sub-compensation schemes corresponding to the inter-satellite link include: a fifth sub-compensation scheme based on the coarse tracking error compensation technology and a sixth sub-compensation scheme based on the beam aiming deviation compensation technology;

The sub-compensation scheme corresponding to the satellite-ground downlink includes: the first sub-compensation scheme, the second sub-compensation scheme, the third sub-compensation scheme, and the fourth sub-compensation scheme.

Further, the third sub-compensation scheme includes: a first power sub-compensation scheme and a second power sub-compensation scheme; wherein, there is no power compensation upper limit in the first power sub-compensation scheme; the second power sub-compensation scheme There is an upper limit of power compensation in the scheme;

the third sub-compensation scheme corresponding to the satellite-ground uplink is the first power sub-compensation scheme;

The third sub-compensation scheme corresponding to the satellite-ground downlink is the second power sub-compensation scheme.

In a second aspect, an embodiment of the present invention provides a multi-task-oriented satellite communication network adaptive compensation device, including:

The task type acquisition module is used to obtain the task type of the current communication task;

an overall compensation scheme determination module, configured to determine an overall compensation scheme according to the task type; wherein the overall compensation scheme includes: sub-compensation schemes corresponding to each transmission link involved in the current communication task; the Each transmission link is a laser link or a microwave link;

The communication compensation module is used to perform communication compensation by adopting the sub-compensation scheme corresponding to each transmission link in each transmission link stage in the communication process.

Further, the task types include: a first task type, a second task type, a third task type, a fourth task type, and a fifth task type;

The first task type is: a first ground user accesses a geosynchronous orbit GEO satellite through a low earth orbit LEO satellite or a medium earth orbit MEO satellite in the satellite communication network, and communicates with the second ground user through the GEO satellite. The type of task that sent the data;

The second task type is: a task type in which the third ground user sends data to the fourth ground user through the LEO satellite or the MEO satellite;

The third task type is: a task type in which the fifth ground user sends data to the sixth ground user through the GEO satellite;

The fourth task type is: a task type in which the GEO satellite sends data to the seventh ground user through the LEO satellite or the MEO satellite;

The fifth task type is: the task type in which the GEO satellite directly sends data to the eighth ground user;

When the task type of the current communication task is any one of the first task type, the second task type or the third task type, each transmission link involved in the current communication task They are: satellite-to-ground uplink, inter-satellite link and satellite-to-ground downlink;

When the task type of the current communication task is the fourth task type, each transmission link involved in the current communication task is: an inter-satellite link and a satellite-ground downlink;

When the task type of the current communication task is the fifth task type, the transmission link involved in the current communication task is: satellite-ground downlink.

Further, the sub-compensation schemes corresponding to the satellite-ground uplink include: a first sub-compensation scheme based on adaptive coding technology, a second sub-compensation scheme based on probability shaping technology, and a third sub-compensation scheme based on power adaptive control technology. Sub-compensation scheme and the fourth sub-compensation scheme based on laser beam aiming angle compensation technology;

The sub-compensation schemes corresponding to the inter-satellite link include: a fifth sub-compensation scheme based on the coarse tracking error compensation technology and a sixth sub-compensation scheme based on the beam aiming deviation compensation technology;

The sub-compensation scheme corresponding to the satellite-ground downlink includes: the first sub-compensation scheme, the second sub-compensation scheme, the third sub-compensation scheme, and the fourth sub-compensation scheme.

Further, the third sub-compensation scheme includes: a first power sub-compensation scheme and a second power sub-compensation scheme; wherein, there is no power compensation upper limit in the first power sub-compensation scheme; the second power sub-compensation scheme There is an upper limit of power compensation in the scheme;

the third sub-compensation scheme corresponding to the satellite-ground uplink is the first power sub-compensation scheme;

The third sub-compensation scheme corresponding to the satellite-ground downlink is the second power sub-compensation scheme.

In a third aspect, an embodiment of the present invention provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

memory for storing computer programs;

The processor is configured to implement the steps of any of the above-mentioned multi-task-oriented satellite communication network adaptive compensation methods when executing the program stored in the memory.

In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer can execute any of the above-mentioned multi-oriented An adaptive compensation method for satellite communication networks for missions.

In a fifth aspect, an embodiment of the present invention further provides a computer program product including instructions, which, when running on a computer, enables the computer to execute any of the above-mentioned multitasking-oriented satellite communication network adaptive compensation methods.

A multi-task-oriented satellite communication network adaptive compensation method and device provided by an embodiment of the present invention acquires the task type of a current communication task; determines an overall compensation scheme according to the task type; wherein the overall compensation scheme includes: A sub-compensation scheme corresponding to each transmission link involved in the current communication task; each transmission link is a laser link or a microwave link; in the communication process, in each transmission link stage, the Communication compensation is performed on the sub-compensation schemes corresponding to the respective transmission links. In the embodiment of the present invention, according to the task type of the current communication task, a sub-compensation scheme corresponding to each transmission link involved in the current communication task is determined, and in each transmission link stage, the corresponding sub-compensation scheme is used to perform Communication compensation, therefore, improves the performance of network transmissions.

Of course, it is not necessary for any product or method of the present invention to achieve all of the advantages described above at the same time.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Figure 1 is an architecture diagram of a satellite communication network;

2 is a schematic flowchart of a multitask-oriented satellite communication network adaptive compensation method provided by an embodiment of the present invention;

3 is a schematic structural diagram of a multitask-oriented satellite communication network adaptive compensation device provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

2 is a schematic flowchart of a multitask-oriented satellite communication network adaptive compensation method provided by an embodiment of the present invention, including:

Step 201, acquiring the task type of the current communication task.

Step 202: Determine an overall compensation scheme according to the task type; wherein the overall compensation scheme includes: sub-compensation schemes corresponding to each transmission link involved in the current communication task; each transmission link is a laser link or a microwave link.

Among them, fixed users on the ground can communicate with satellites either through microwaves or lasers, while mobile users on the ground can only communicate with satellites through microwaves; the direct inter-satellite links between satellites are laser communication links.

Step 203 , in the communication process, in each transmission link stage, the sub-compensation scheme corresponding to each transmission link is used to perform communication compensation.

In the above embodiment, the sub-compensation scheme corresponding to each transmission link involved in the current communication task can be determined according to the task type of the current communication task, and the corresponding sub-compensation scheme is adopted in each transmission link stage. Communication compensation is performed, therefore, the performance of network transmission is improved.

Further, the task types of the current communication task acquired in step 201 may include the following five types: the first task type, the second task type, the third task type, the fourth task type and the fifth task type;

Specifically, the first task type is: a first ground user accesses a geosynchronous orbit GEO satellite through a low earth orbit LEO satellite or a medium earth orbit MEO satellite in the satellite communication network, and sends data to the second ground user through the GEO satellite Task type; the second task type is: the third ground user sends data to the fourth ground user through the LEO satellite or the MEO satellite; the third task type is: the fifth ground user sends data to the sixth ground user through the GEO satellite The fourth task type is: the GEO satellite sends data to the seventh ground user through the LEO satellite or the MEO satellite; the fifth task type is: the GEO satellite directly sends data to the eighth ground user. The first ground user may be any ground user, the second ground user may be any ground user except the first ground user; the third ground user may be any ground user, and the fourth ground user may be any ground user except the first ground user Any ground user except the first ground user; the fifth ground user can be any ground user, the sixth ground user can be any ground user except the first ground user; the seventh ground user can be any ground user Ground user; the eighth ground user can also be any ground user.

If the task type of the current communication task is any one of the first task type, the second task type or the third task type, the transmission links involved in the current communication task are: satellite-ground uplink, inter-satellite link and satellite-to-ground downlink;

If the task type of the current communication task is the fourth task type, the transmission links involved in the current communication task are: inter-satellite link and satellite-ground downlink;

If the task type of the current communication task is the fifth task type, the transmission link involved in the current communication task is: satellite-ground downlink.

In step 202, when determining the overall compensation scheme according to the task type, firstly determine the transmission link involved in the current communication task, and then determine the corresponding sub-compensation scheme according to the transmission link, so as to form the overall compensation scheme.

Further, the sub-compensation scheme corresponding to the satellite-ground uplink includes: a first sub-compensation scheme based on adaptive coding technology, a second sub-compensation scheme based on probability shaping technology, and a third sub-compensation scheme based on power adaptive control technology. scheme and the fourth sub-compensation scheme based on laser beam aiming angle compensation technology.

Specifically, the satellite-to-ground uplink can be divided into two parts: the part from the ground user to the atmosphere; the part from the atmosphere to the satellite. Among them, in the part from the ground user to the atmosphere, since the transmitting end is in the earth's surface atmosphere, and the receiving end is in the free space far away from the earth's surface atmosphere, the influence of atmospheric turbulence on the receiving light field is manifested as a far-field effect. In the process of the surface atmosphere, the far-field effect will cause random fluctuations in the received light intensity and the center of the spot, that is, the far-field effect affects the beam quality of the laser signal at the receiving end; at the same time, atmospheric interference will also cause the attenuation of the transmitted signal in the channel; In the satellite part, due to the influence of satellite orbit, satellite attitude drift and on-board thermal environment changes, the beam aiming angle will be deviated. Therefore, in the satellite-to-ground uplink, it is necessary to perform communication compensation from three aspects: beam quality, transmission signal attenuation, and laser beam aiming angle deviation.

In order to improve the communication quality, the first sub-compensation scheme based on adaptive coding technology can be used: the channel coding technology of low-density parity check code is used at the transmitting end for channel coding, and BP (BackPropagation, error backward propagation) is used at the receiving end. algorithm to decode. Since the low-density parity-check code channel coding technology can realize adaptive signal rate adjustment, it can effectively improve the anti-interference ability of the system, thereby improving the communication quality. For the specific implementation process of the low-density parity-check code channel coding technology and the BP algorithm, reference may be made to the related prior art, which will not be repeated here.

In order to improve the capacity of information transmission, a second sub-compensation scheme based on probability shaping technology can be used: a probability shaping scheme based on a constant composition distribution matcher is used at the transmitting end, specifically: the binary data to be sent is transformed into a constant composition distribution matcher. For symbol data, make it into a uniformly distributed binary map, and then perform FEC (Forward Error Correction, forward error correction) coding, and then correspond to high-order modulation and coding. , FEC decoding, binary to symbol mapping, constant composition distribution matcher demodulation, and finally get the original data. The above makes the input symbols follow the optimal matching distribution of the channel, so that the mutual information is closer to the theoretical channel capacity. When probabilistic shaping is performed on high-order modulation techniques, the inner signal probability of the transmitter is high, and the outward probability is lower and lower. When the optical signal-to-noise ratio exceeds a certain value, the mutual information is closer to the theoretical channel capacity. Under the condition of transmitting optical power, the bit error rate of the optical communication system using probability shaping is lower than that of the optical communication system using uniform distribution.

In order to compensate the attenuation of the transmission signal, the third sub-compensation scheme based on the power adaptive control technology can be used. The signal attenuation caused by factors such as atmospheric turbulence keeps the power of the signal at the receiving end within a certain range.

Further, the third sub-compensation scheme includes: a first power sub-compensation scheme and a second power sub-compensation scheme; wherein, there is no power compensation upper limit in the first power sub-compensation scheme; and a power compensation upper limit exists in the second power sub-compensation scheme .

In the satellite-ground uplink, the transmitting end is a ground user, so the transmit power is not limited, that is, there is no upper limit of power compensation, therefore, the first power sub-compensation scheme can be used for power compensation. Specifically: the receiving end performs SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) measurement and estimation on the received signal, generates a corresponding power control command according to a power control algorithm, and calculates the corresponding TPC according to certain data. The format and baseband data are framed and modulated, and then transmitted to the transmitter through the downlink. The transmitter demodulates and restores the received modulated signal to obtain baseband data, and extracts the corresponding power control according to the data frame format specified by the communication protocol. The TPC is instructed, and the corresponding gain adjustment amount is generated according to the instruction, and then the transmit power of the uplink modulated signal is adjusted accordingly.

In order to reduce the deviation of the laser beam aiming angle, the fourth sub-compensation scheme based on the laser beam aiming angle compensation technology can be used. The aiming deviation of the terminal on-orbit beam is obtained, and then a coordinate correction matrix is used to inject the obtained beam aiming deviation correction angle to the satellite optical communication terminal to correct the terminal aiming deviation.

Further, the sub-compensation scheme corresponding to the inter-satellite link includes: a fifth sub-compensation scheme based on the coarse tracking error compensation technology and a sixth sub-compensation scheme based on the beam aiming deviation compensation technology;

Specifically, since the channel environment of the inter-satellite link is deep space, the vibration of the satellite platform, the relative motion between the satellites, the electronic and mechanical noise inside the system and other factors will cause the satellite aiming to produce angular errors during the rough tracking process; The coupling motion between the communication terminal and the satellite platform will also lead to the beam aiming deviation. Therefore, in the inter-satellite link, it is necessary to perform communication compensation from two aspects, the coarse tracking error and the beam aiming deviation.

In order to reduce the coarse tracking error, a fifth sub-compensation scheme based on the coarse tracking error compensation technology can be used to determine the optimal beam divergence angle based on the coarse tracking error compensation technology. When the information transmission rate is constant, the error probability gradually increases with the increase of the link distance, the error probability gradually increases with the increase of the tracking error angle jitter variance, and the error probability gradually decreases with the increase of the transmit power. , the selection of the optimal beam divergence angle can minimize the corresponding error probability; under a certain error probability requirement, the selection of the optimal beam divergence angle can maximize the corresponding information transmission rate; under a certain information transmission rate, select the most The optimal beam divergence angle can minimize the corresponding error probability; under a certain error probability requirement, selecting the optimal beam divergence angle can maximize the corresponding information transmission rate. For the specific determination method of the optimal beam divergence angle, you can refer to the relevant The prior art is not repeated here.

In order to reduce the beam aiming deviation, the sixth sub-compensation scheme based on the beam aiming deviation compensation technology can be used: Specifically, on the basis of the known orbital motion models of the transmitting-end satellite and the receiving-end satellite, the aiming angle prediction algorithm predicts two The aiming angle between satellites, due to the coupling motion will make the position of the target satellite deviate from the predicted position, resulting in aiming deviation. In order to compensate for the aiming deviation caused by the coupling motion, the rotation angle of the two-dimensional turntable can be corrected, so as to complete the aiming process due to the coupling motion. Compensation for the resulting aiming bias.

Further, the sub-compensation scheme corresponding to the satellite-ground downlink includes: the above-mentioned first sub-compensation scheme, the above-mentioned second sub-compensation scheme, the above-mentioned third sub-compensation scheme, and the above-mentioned fourth sub-compensation scheme.

Since in the satellite-to-ground downlink, the transmitter is a satellite, so the transmit power is not infinite, and the upper limit of the satellite transmit power needs to be considered when adjusting. Therefore, for the above-mentioned third sub-compensation scheme, in the satellite-ground downlink, the second power sub-compensation scheme can be used to perform power compensation. Specifically: the ground user receiving end performs SINR measurement and estimation on the received satellite signal, generates a corresponding quantized power control command TPC according to a power control algorithm, and modulates the corresponding TPC with baseband data in a frame according to a certain data format; further, Through the uplink transmission to the satellite, the satellite demodulates and restores the received modulated signal to obtain baseband data, and extracts the corresponding power control command TPC according to the data frame format specified by the communication protocol, and generates the corresponding gain adjustment amount according to the command. Then, the transmit power of the downlink modulated signal is adjusted accordingly. Since the transmit power of the satellite terminal is not infinite, it is necessary to consider the upper limit of the transmit power when adjusting.

To sum up, if the task type of the current communication task is any one of the first task type, the second task type or the third task type, the transmission links involved are: satellite-ground uplink, inter-satellite link and satellite-to-ground downlink. At this time, it can be determined that the overall compensation scheme is: in the satellite-ground uplink phase, the above-mentioned first sub-compensation scheme, second sub-compensation scheme, third sub-compensation scheme and fourth sub-compensation scheme are used for communication compensation, wherein , the third sub-compensation scheme is specifically the first power sub-compensation scheme; in the inter-satellite link stage, the above fifth sub-compensation scheme and the above sixth sub-compensation scheme are used for communication compensation; in the satellite-ground downlink stage, simultaneously The communication compensation is performed using the first sub-compensation scheme, the second sub-compensation scheme, the third sub-compensation scheme, and the fourth sub-compensation scheme, wherein the third sub-compensation scheme is specifically the second power sub-compensation scheme.

If the task type of the current communication task is the fourth task type, the respective transmission links involved are: an inter-satellite link and a satellite-ground downlink. At this time, it can be determined that the overall compensation scheme is: in the inter-satellite link phase, the fifth sub-compensation scheme and the sixth sub-compensation scheme above are used for communication compensation; in the satellite-ground downlink phase, the first sub-compensation scheme above is used simultaneously. The sub-compensation scheme, the second sub-compensation scheme, the third sub-compensation scheme, and the fourth sub-compensation scheme perform communication compensation, wherein the third sub-compensation scheme is specifically the second power sub-compensation scheme.

If the task type of the current communication task is the fifth task type, each transmission link involved is: satellite-ground downlink. At this time, it can be determined that the overall compensation scheme is: in the satellite-ground downlink phase, the above-mentioned first sub-compensation scheme, the above-mentioned second sub-compensation scheme, the above-mentioned third sub-compensation scheme, and the above-mentioned fourth sub-compensation scheme are simultaneously used for communication. compensation, wherein the third sub-compensation scheme is specifically the second power sub-compensation scheme.

Based on the same inventive concept, according to the multi-task-oriented satellite communication network adaptive compensation method provided by the above-mentioned embodiments of the present invention, correspondingly, the present invention also provides a multi-task-oriented satellite communication network adaptive compensation device, which The schematic structural diagram of the device is shown in Figure 3, including:

A task type acquisition module 301, for acquiring the task type of the current communication task;

The overall compensation scheme determination module 302 is configured to determine the overall compensation scheme according to the task type; wherein, the overall compensation scheme includes: sub-compensation schemes corresponding to each transmission link involved in the current communication task; each transmission link is a laser chain road or microwave link;

The communication compensation module 303 is used to perform communication compensation in each transmission link stage by adopting the sub-compensation scheme corresponding to each transmission link in the communication process.

Further, the task types include: a first task type, a second task type, a third task type, a fourth task type, and a fifth task type;

The first task type is: a task type in which the first ground user accesses the geosynchronous orbit GEO satellite through a low earth orbit LEO satellite or a medium earth orbit MEO satellite in the satellite communication network, and sends data to the second ground user through the GEO satellite;

The second task type is: the task type in which the third ground user sends data to the fourth ground user through the LEO satellite or the MEO satellite;

The third task type is: the task type in which the fifth ground user sends data to the sixth ground user through the GEO satellite;

The fourth task type is: the task type in which the GEO satellite sends data to the seventh ground user through the LEO satellite or the MEO satellite;

The fifth task type is: the task type in which the GEO satellite directly sends data to the eighth ground user;

If the task type of the current communication task is any one of the first task type, the second task type or the third task type, the transmission links involved in the current communication task are: satellite-ground uplink, inter-satellite link and satellite-to-ground downlink;

If the task type of the current communication task is the fourth task type, the transmission links involved in the current communication task are: inter-satellite link and satellite-ground downlink;

If the task type of the current communication task is the fifth task type, the transmission link involved in the current communication task is: satellite-ground downlink.

Further, the sub-compensation scheme corresponding to the satellite-ground uplink includes: a first sub-compensation scheme based on adaptive coding technology, a second sub-compensation scheme based on probability shaping technology, and a third sub-compensation scheme based on power adaptive control technology. scheme and the fourth sub-compensation scheme based on laser beam aiming angle compensation technology;

The sub-compensation schemes corresponding to the inter-satellite link include: the fifth sub-compensation scheme based on the coarse tracking error compensation technology and the sixth sub-compensation scheme based on the beam aiming deviation compensation technology;

The sub-compensation schemes corresponding to the satellite-ground downlink include: a first sub-compensation scheme, a second sub-compensation scheme, a third sub-compensation scheme, and a fourth sub-compensation scheme.

Further, the third sub-compensation scheme includes: a first power sub-compensation scheme and a second power sub-compensation scheme; wherein, there is no power compensation upper limit in the first power sub-compensation scheme; and a power compensation upper limit exists in the second power sub-compensation scheme ;

The third sub-compensation scheme corresponding to the satellite-ground uplink is the first power sub-compensation scheme;

The third sub-compensation scheme corresponding to the satellite-ground downlink is the second power sub-compensation scheme.

In the embodiment shown in FIG. 3 , according to the task type of the current communication task, a sub-compensation scheme corresponding to each transmission link involved in the current communication task is determined, and in each transmission link stage, the corresponding sub-compensation scheme is adopted respectively. The scheme performs communication compensation, therefore, improving the performance of network transmission.

An embodiment of the present invention further provides an electronic device, as shown in FIG. 4 , including a processor 401 , a communication interface 402 , a memory 403 and a communication bus 404 , wherein the processor 401 , the communication interface 402 , and the memory 403 pass through the communication bus 404 complete communication with each other,

a memory 403 for storing computer programs;

When the processor 401 is used to execute the program stored in the memory 403, the following steps are implemented:

Get the task type of the current communication task;

Determine the overall compensation scheme according to the task type; wherein, the overall compensation scheme includes: sub-compensation schemes corresponding to each transmission link involved in the current communication task; each transmission link is a laser link or a microwave link;

During the communication process, at each transmission link stage, the sub-compensation scheme corresponding to each transmission link is used to perform communication compensation.

Further, other processing procedures in the above-mentioned multi-task-oriented satellite communication network adaptive compensation method provided in the embodiment of the present invention may also be included, which will not be described in detail here.

The communication bus mentioned above by the electronic device may be a Peripheral Component Interconnect (PCI for short) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA for short) bus or the like. The communication bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

The communication interface is used for communication between the above electronic device and other devices.

The memory may include random access memory (Random Access Memory, RAM for short), and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

The above-mentioned processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; may also be a digital signal processor (Digital Signal Processing, referred to as DSP) , Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

In yet another embodiment provided by the present invention, a computer-readable storage medium is also provided, where instructions are stored in the computer-readable storage medium, when the computer-readable storage medium is run on a computer, the computer is made to execute any one of the above-mentioned embodiments. The multi-task-oriented satellite communication network adaptive compensation method.

In yet another embodiment provided by the present invention, there is also provided a computer program product containing instructions, which, when run on a computer, enables the computer to execute the multitasking-oriented satellite communication network described in any of the foregoing embodiments Adaptive compensation method.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, Solid State Disk (SSD)), among others.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Each embodiment in this specification is described in a related manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the apparatus, device, and storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for related parts.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (6)

1. A multitask-oriented satellite communication network adaptive compensation method is characterized by comprising the following steps:

acquiring a task type of a current communication task;

determining an overall compensation scheme according to the task type; wherein the overall compensation scheme comprises: sub-compensation schemes respectively corresponding to the transmission links involved in the current communication task; each transmission link is a satellite uplink, an inter-satellite link and a satellite downlink;

in the communication process, in each transmission link stage, a sub-compensation scheme corresponding to each transmission link is adopted for communication compensation;

the task types include: a first task type, a second task type, a third task type, a fourth task type, and a fifth task type;

the first task type is: a first ground user accesses a geosynchronous orbit GEO satellite through a low earth orbit LEO satellite or a medium earth orbit MEO satellite in the satellite communication network and sends a task type of data to a second ground user through the GEO satellite;

the second task type is: the task type of data sent by the third ground user to the fourth ground user through the LEO satellite or the MEO satellite;

the third task type is: the task type of the data sent by the fifth ground user to the sixth ground user through the GEO satellite;

the fourth task type is: the GEO satellite sends the task type of data to a seventh ground user through the LEO satellite or the MEO satellite;

the fifth task type is: the GEO satellite directly sends the task type of the data to an eighth ground user;

when the task type of the current communication task is any one of the first task type, the second task type, or the third task type, the transmission links involved in the current communication task are respectively: an above-satellite uplink, an inter-satellite link, and an above-satellite downlink;

when the task type of the current communication task is the fourth task type, the transmission links involved in the current communication task are respectively: an inter-satellite link and a satellite-to-ground downlink;

when the task type of the current communication task is the fifth task type, a transmission link involved in the current communication task is: a satellite-to-ground downlink;

the sub-compensation scheme corresponding to the satellite uplink comprises the following steps: a first sub-compensation scheme based on an adaptive coding technology, a second sub-compensation scheme based on a probability shaping technology, a third sub-compensation scheme based on a power adaptive control technology and a fourth sub-compensation scheme based on a laser beam aiming angle compensation technology;

the sub-compensation scheme corresponding to the inter-satellite link comprises the following steps: a fifth sub-compensation scheme based on a coarse tracking error compensation technique and a sixth sub-compensation scheme based on a beam aiming deviation compensation technique;

the sub-compensation scheme corresponding to the satellite-to-ground downlink comprises: the first sub-compensation scheme, the second sub-compensation scheme, the third sub-compensation scheme, and the fourth sub-compensation scheme.

2. The method of claim 1,

the third sub-compensation scheme comprises: a first power sub-compensation scheme and a second power sub-compensation scheme; wherein there is no upper limit of power compensation in the first power sub-compensation scheme; a power compensation upper limit exists in the second power sub-compensation scheme;

the third sub-compensation scheme corresponding to the uplink-to-satellite link is the first power sub-compensation scheme;

the third sub-compensation scheme corresponding to the satellite-to-ground downlink is the second power sub-compensation scheme.

3. A multitasking-oriented adaptive compensation device for a satellite communication network, comprising:

the task type acquisition module is used for acquiring the task type of the current communication task;

the overall compensation scheme determining module is used for determining an overall compensation scheme according to the task type; wherein the overall compensation scheme comprises: sub-compensation schemes respectively corresponding to the transmission links involved in the current communication task; each transmission link is a satellite uplink, an inter-satellite link and a satellite downlink;

the communication compensation module is used for performing communication compensation by adopting a sub-compensation scheme corresponding to each transmission link at each transmission link stage in the communication process;

the task types include: a first task type, a second task type, a third task type, a fourth task type, and a fifth task type;

the first task type is: a first ground user accesses a geosynchronous orbit GEO satellite through a low earth orbit LEO satellite or a medium earth orbit MEO satellite in the satellite communication network and sends a task type of data to a second ground user through the GEO satellite;

the second task type is: the task type of data sent by the third ground user to the fourth ground user through the LEO satellite or the MEO satellite;

the third task type is: the task type of the data sent by the fifth ground user to the sixth ground user through the GEO satellite;

the fourth task type is: the GEO satellite sends the task type of data to a seventh ground user through the LEO satellite or the MEO satellite;

the fifth task type is: the GEO satellite directly sends the task type of the data to an eighth ground user;

when the task type of the current communication task is any one of the first task type, the second task type, or the third task type, the transmission links involved in the current communication task are respectively: an above-satellite uplink, an inter-satellite link, and an above-satellite downlink;

when the task type of the current communication task is the fourth task type, the transmission links involved in the current communication task are respectively: an inter-satellite link and a satellite-to-ground downlink;

when the task type of the current communication task is the fifth task type, a transmission link involved in the current communication task is: a satellite-to-ground downlink;

the sub-compensation scheme corresponding to the satellite uplink comprises the following steps: a first sub-compensation scheme based on an adaptive coding technology, a second sub-compensation scheme based on a probability shaping technology, a third sub-compensation scheme based on a power adaptive control technology and a fourth sub-compensation scheme based on a laser beam aiming angle compensation technology;

the sub-compensation scheme corresponding to the inter-satellite link comprises the following steps: a fifth sub-compensation scheme based on a coarse tracking error compensation technique and a sixth sub-compensation scheme based on a beam aiming deviation compensation technique;

the sub-compensation scheme corresponding to the satellite-to-ground downlink comprises: the first sub-compensation scheme, the second sub-compensation scheme, the third sub-compensation scheme, and the fourth sub-compensation scheme.

4. The apparatus of claim 3, wherein the third sub-compensation scheme comprises: a first power sub-compensation scheme and a second power sub-compensation scheme; wherein there is no upper limit of power compensation in the first power sub-compensation scheme; a power compensation upper limit exists in the second power sub-compensation scheme;

the third sub-compensation scheme corresponding to the uplink-to-satellite link is the first power sub-compensation scheme;

the third sub-compensation scheme corresponding to the satellite-to-ground downlink is the second power sub-compensation scheme.

5. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;

a memory for storing a computer program;

a processor for implementing the method steps of any of claims 1-2 when executing a program stored in the memory.

6. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of the claims 1-2.

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