CN117835409A

CN117835409A - Communication method, system, equipment and medium for low-orbit satellite and terminal

Info

Publication number: CN117835409A
Application number: CN202311795120.0A
Authority: CN
Inventors: 于永涛; 赵号; 万南平; 施渊籍; 石晶林
Original assignee: Zhongke Nanjing Mobile Communication And Computing Innovation Research Institute
Current assignee: Zhongke Nanjing Mobile Communication And Computing Innovation Research Institute
Priority date: 2023-12-22
Filing date: 2023-12-22
Publication date: 2024-04-05

Abstract

The embodiment of the application provides a communication method, a system, equipment and a medium for a low-orbit satellite and a terminal, and belongs to the technical field of satellite mobile communication. The method comprises the following steps: when the low-orbit satellite operates to a first position, receiving and analyzing first transmission data sent by a terminal at a first moment based on an initial wireless bearing resource and an initial physical channel to obtain corresponding terminal characteristic information; inputting the terminal characteristic information into a pre-trained prediction model for prediction processing to obtain a prediction block error rate; determining a target radio bearer resource and a target physical channel based on the predicted block error rate; and when the low-orbit satellite operates to a second position, receiving second transmission data sent by the terminal at a second moment based on the target radio bearer resource and the target physical channel, wherein the first position and the second position are different. The method and the device can improve the efficiency of determining the wireless resource and the physical channel, thereby improving the stability and the reliability of communication between the low-orbit satellite and the terminal.

Description

Communication method, system, equipment and medium for low-orbit satellite and terminal

Technical Field

The present disclosure relates to the field of satellite mobile communications technologies, and in particular, to a method, a system, an apparatus, and a medium for communicating a low-orbit satellite with a terminal.

Background

The low-orbit satellite plays an important role in realizing global communication, navigation positioning and the like. In the related art, a low-orbit satellite transmits relevant parameters of a quality of service policy (Quality of Service, qoS) to a ground control station, and the ground control station determines radio resources and physical channels according to the QoS, so that the low-orbit satellite and a terminal can perform data transmission based on the radio resources and the physical channels.

However, due to the influence of factors such as the earth surface environment, electromagnetic interference, frequent changes of physical channels and the like, the QoS of the ground control station cannot be updated in time, so that the stability and reliability of communication between the low-orbit satellite and the terminal are affected.

Disclosure of Invention

The main purpose of the embodiments of the present application is to provide a method, a system, a device, and a medium for communication between a low-orbit satellite and a terminal, which can improve the efficiency of determining radio resources and physical channels, thereby improving the stability and reliability of communication between the low-orbit satellite and the terminal.

In order to achieve the above objective, a first aspect of the embodiments of the present application provides a communication method between a low-orbit satellite and a terminal, which is applied to the low-orbit satellite, where the low-orbit satellite is in communication connection with the terminal, and the low-orbit satellite and the terminal include a plurality of selectable radio bearer resources and physical channels when transmitting data;

The communication method of the low-orbit satellite and the terminal comprises the following steps:

determining an initial radio bearer resource and an initial physical channel from a plurality of said radio bearer resources and a plurality of said physical channels when said low orbit satellite is operating to a first location;

based on the initial wireless bearing resource and the initial physical channel, receiving and analyzing first transmission data sent by the terminal at a first moment to obtain corresponding terminal characteristic information;

inputting the terminal characteristic information into a pre-trained prediction model for prediction processing to obtain the prediction block error rate of data transmission of all the radio bearer resources on different physical channels at the second moment;

re-determining a target radio bearer resource and a target physical channel from the plurality of radio bearer resources and the plurality of physical channels based on the predicted block error rate;

and when the low-orbit satellite operates to a second position, receiving second transmission data sent by the terminal at the second moment based on the target radio bearer resource and the target physical channel, wherein the first position and the second position are different.

In some embodiments, the low-orbit satellite, the terminal is also connected to a ground control station;

The receiving and analyzing the first transmission data sent by the terminal at the first moment to obtain corresponding terminal characteristic information includes:

periodically receiving terminal position information and climate data information of the terminal sent by the ground control station;

analyzing the first transmission data to obtain a terminal identity of the terminal and a transmission data identity;

determining corresponding service quality parameters according to the transmission data identification;

and obtaining terminal characteristic information corresponding to the first transmission data according to the terminal identity, the transmission data identity, the service quality parameter, the terminal position information and the climate data information.

In some embodiments, the inputting the terminal characteristic information into a pre-trained prediction model for prediction processing to obtain prediction block error rates of data transmission of all the radio bearer resources on different physical channels at the second moment includes:

inputting the terminal characteristic information into the prediction model, and carrying out characteristic extraction on the terminal characteristic information based on the prediction model to obtain the terminal characteristic information after characteristic extraction;

and carrying out prediction processing according to the terminal characteristic information after the characteristic extraction to obtain the prediction block error rate of data transmission of all the radio bearer resources on different physical channels at the second moment.

In some embodiments, the re-determining the target radio bearer resource and the target physical channel from the plurality of radio bearer resources and the plurality of physical channels based on the predicted block error rate comprises:

when the prediction block error rate is smaller than a preset block error rate threshold, determining that the radio bearer resources and the physical channels corresponding to the prediction block error rate are radio bearer resources to be selected and physical channels to be selected;

determining the target radio bearer resource and the target physical channel based on the prediction block error rate; or,

determining the target radio bearer resource and the target physical channel based on a preset priority order of the physical channels to be selected;

and if the target radio bearer resource and/or the target physical channel cannot meet the communication requirement, re-determining the target radio bearer resource and/or the target physical channel from the rest radio bearer resources to be selected and the rest physical channel according to the prediction block error rate.

In some embodiments, the predictive model is trained by the steps comprising:

acquiring a preset sample transmission data set, wherein the sample transmission data set comprises a plurality of sample transmission data, and each transmission data comprises a corresponding block error rate tag;

Selecting any sample transmission data from the sample transmission data set, and inputting the sample transmission data into the prediction model to obtain a predicted sample block error rate;

calculating to obtain a block error rate loss value of the prediction model according to the block error rate label and the sample block error rate;

and adjusting parameters of the prediction model according to the block error rate loss value to obtain the trained prediction model.

In some embodiments, the prediction model includes a first prediction layer and a second prediction layer, and the predicted sample block error rate includes a first sample block error rate and a second sample block error rate;

the selecting any sample transmission data from the sample transmission data set to be input into the prediction model to obtain a predicted sample block error rate comprises the following steps:

inputting the sample transmission data into the first prediction layer to obtain a first sample block error rate, and inputting the sample transmission data into the second prediction layer to obtain a second sample block error rate;

calculating variances among the block error rate label, the first sample block error rate and the second sample block error rate to obtain a prediction error value;

based on the prediction error value, obtaining a first prediction weight and a second prediction weight corresponding to the first prediction layer and the second prediction layer by using a reciprocal variance method;

Multiplying the first prediction weight and the first sample block error rate to obtain a first multiplication value, multiplying the second prediction weight and the second sample block error rate to obtain a second multiplication value, and adding the first multiplication value and the second multiplication value to obtain the sample block error rate.

In order to achieve the above object, a second aspect of the embodiments of the present application provides a method for communication between a low-orbit satellite and a terminal, which is applied to the terminal, where the terminal is in communication connection with the low-orbit satellite, and the low-orbit satellite and the terminal include a plurality of selectable radio bearer resources and physical channels when transmitting data;

when the low-orbit satellite operates to a first position, determining initial radio bearing resources and initial physical channels according to initial information sent by the low-orbit satellite;

based on the initial radio bearer resources and the initial physical channels, first transmission data are sent to the low-orbit satellite at a first moment, so that the low-orbit satellite receives and analyzes the first transmission data to obtain corresponding terminal characteristic information, and target radio bearer resources and target physical channels corresponding to a second moment are predicted according to the terminal characteristic information;

Obtaining the target radio bearer resource and the target physical channel according to the target information sent by the low-orbit satellite;

and when the low-orbit satellite operates to a second position, based on the target radio bearer resource and the target physical channel, transmitting second transmission data to the low-orbit satellite at a second moment, wherein the first position and the second position are different.

To achieve the above object, a third aspect of the embodiments of the present application proposes a communication system of a low-orbit satellite and a terminal, the communication system of the low-orbit satellite and the terminal including:

an initial module configured to determine an initial radio bearer resource and an initial physical channel from a plurality of the radio bearer resources and a plurality of the physical channels when the low-orbit satellite is operating to a first location;

the first transmission module is used for receiving and analyzing first transmission data sent by the terminal at a first moment based on the initial wireless bearing resource and the initial physical channel to obtain corresponding terminal characteristic information;

the prediction module is used for inputting the terminal characteristic information into a pre-trained prediction model to perform prediction processing, so as to obtain the prediction block error rate of data transmission of all the radio bearer resources on different physical channels at the second moment;

A target module for re-determining a target radio bearer resource and a target physical channel from a plurality of the radio bearer resources and a plurality of the physical channels based on the predicted block error rate;

and the second transmission module is used for receiving second transmission data sent by the terminal at the second moment based on the target radio bearer resource and the target physical channel when the low-orbit satellite runs to a second position, wherein the first position and the second position are different.

To achieve the above object, a fourth aspect of the embodiments of the present application proposes an electronic device, where the electronic device includes a memory and a processor, where the memory stores a computer program, and the processor executes the computer program to implement the method for communication between a low-orbit satellite and a terminal according to the embodiment of the first aspect or the method for communication between a low-orbit satellite and a terminal according to the embodiment of the second aspect.

To achieve the above object, a fifth aspect of the embodiments of the present application proposes a storage medium, which is a computer-readable storage medium, storing a computer program, where the computer program is executed by a processor to implement a method for communication between a low-orbit satellite and a terminal according to the above first aspect embodiment, or a method for communication between a low-orbit satellite and a terminal according to the above second aspect embodiment.

The embodiment of the application provides a communication method, a system, equipment and a medium of a low-orbit satellite and a terminal, wherein the method comprises the following steps: determining an initial radio bearer resource and an initial physical channel from a plurality of radio bearer resources and a plurality of physical channels when the low-orbit satellite is operating to the first location; based on the initial wireless bearing resource and the initial physical channel, receiving and analyzing first transmission data sent by the terminal at a first moment to obtain corresponding terminal characteristic information; inputting the terminal characteristic information into a pre-trained prediction model to perform prediction processing, so as to obtain the prediction block error rate of data transmission of all radio bearer resources on different physical channels at the second moment; re-determining a target radio bearer resource and a target physical channel from the plurality of radio bearer resources and the plurality of physical channels based on the predicted block error rate; and when the low-orbit satellite operates to a second position, receiving second transmission data sent by the terminal at a second moment based on the target radio bearer resource and the target physical channel, wherein the first position and the second position are different.

The embodiment of the application at least comprises the following beneficial effects: compared with the prior art that the service quality policy parameters are required to be sent to the ground every time, the method and the device can reduce the transmission times of the data of the low-orbit satellite and the ground terminal for determining the related transmission paths, avoid the problem that the communication quality between the low-orbit satellite and the terminal is poor due to the fact that the service quality policy parameters cannot be timely sent due to the influences of factors such as the earth surface environment, electromagnetic interference and frequent change of physical channels, and improve the efficiency of determining the wireless resources and the physical channels, and further improve the stability and reliability of communication between the low-orbit satellite and the terminal.

Drawings

Fig. 1 is an application scenario schematic diagram of a communication system of a low-orbit satellite and a terminal according to an embodiment of the present application;

FIG. 2 is an alternative flow chart of a method of low-orbit satellite to terminal communication provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of the relative positions of an optional low-orbit satellite and a terminal according to the communication method between the low-orbit satellite and the terminal according to the embodiment of the present application;

FIG. 4 is a flow chart of one implementation of step S102 in FIG. 2;

FIG. 5 is an alternative mapping diagram of a method of communication between a low-orbit satellite and a terminal according to an embodiment of the present application;

FIG. 6 is another implementation flowchart of step S102 in FIG. 2;

FIG. 7 is a schematic diagram of an alternative prediction model of a method for communication between a low-orbit satellite and a terminal according to an embodiment of the present application;

fig. 8 is a schematic diagram of an alternative prediction model of a communication method between a low-orbit satellite and a terminal according to an embodiment of the present application;

FIG. 9 is a flow chart of one implementation of step S104 in FIG. 2;

FIG. 10 is another alternative flow chart of a method of low-orbit satellite to terminal communication provided by embodiments of the present application;

FIG. 11 is a flow chart of one implementation of step S502 in FIG. 10;

FIG. 12 is a flowchart of yet another alternative method for low-orbit satellite to terminal communication provided by embodiments of the present application;

Fig. 13 is a schematic diagram of an optional system functional module of a communication method between a low-orbit satellite and a terminal according to an embodiment of the present application;

fig. 14 is a schematic hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.

First, several nouns referred to in this application are parsed:

quality of service policy (QoS), a measure of the quality of service of a network, is used to measure and manage the priority, reliability and performance of different applications and traffic in the network.

Radio bearer resources, including radio signaling bearer resources (Signaling Radio Bearer, SRB) and radio data bearer resources (Data Radio Bearer, DRB), wherein SRB is mainly used for carrying signaling information on the control plane, such as RRC (Radio Resource Control) messages, etc., and DRB is mainly used for transmitting user data, such as video streams, web page data. Communication message data, etc.

The low-orbit satellite plays an important role in realizing global communication, navigation positioning and the like. In the related art, qoS is issued to a ground control station by a low-orbit satellite, and a radio resource and a physical channel are determined by the ground control station according to the QoS, so that the low-orbit satellite and a terminal can perform data transmission based on the radio resource and the physical channel.

For a better understanding of the relevant background of the present application, the following description is made in detail with respect to background aspects.

Low-orbit satellites are characterized by a low orbit and thus a relatively fast speed of change of position from a terminal, compared to medium-high orbit satellites, and typically are capable of orbiting the earth in 90 minutes to 2 hours. In such a case, the continuous change of the positions of the low-orbit satellites makes it impossible to limit the communication between the low-orbit satellites and the terminals to only a single radio bearer resource and physical channel, but it is necessary to switch the corresponding radio bearer resource and physical channel at different positions to ensure high-quality communication between the low-orbit satellites and the terminals.

Further, the low-orbit satellite and the terminal comprise a plurality of selectable radio bearer resources and physical channels when data transmission is performed, for example, the terminal executes a real-time call task and a download transmission task, for the real-time call task, the radio bearer resources and the physical channels of a high-frequency band can be selected to meet the requirement of high-quality real-time call, and for the download transmission task with low instantaneity, the radio bearer resources and the physical channels of the low-frequency band can be selected to reasonably allocate the transmission resources.

Further, radio bearer resources and physical channels may be generally determined by QoS, specifically, the computing power of the low-orbit satellite is generally limited by conditions such as hardware and bandwidth, so that the low-orbit satellite is required to transmit QoS to the ground control station in the related art, and after the ground control station calculates and determines the radio bearer resources and the physical channels between the terminal and the low-orbit satellite according to QoS, the terminal and the low-orbit satellite are informed of the related information, so that the terminal and the low-orbit satellite communicate based on the determined radio bearer resources and the physical channels.

However, the communication between the terminal and the low-orbit satellite is interfered in various aspects, such as electromagnetic interference, solar interference, weather and climate interference in different areas, so when QoS is affected and cannot be timely issued to the ground control station, updated radio bearer resources and physical channels cannot be timely determined at the next time, and the stability and reliability of the communication between the terminal and the low-orbit satellite are affected.

Based on this, the embodiment of the application provides a method, a system, a device and a medium for communication between a low-orbit satellite and a terminal, wherein the method comprises the following steps: determining an initial radio bearer resource and an initial physical channel from a plurality of radio bearer resources and a plurality of physical channels when the low-orbit satellite is operating to the first location; based on the initial wireless bearing resource and the initial physical channel, receiving and analyzing first transmission data sent by the terminal at a first moment to obtain corresponding terminal characteristic information; inputting the terminal characteristic information into a pre-trained prediction model to perform prediction processing, so as to obtain the prediction block error rate of data transmission of all radio bearer resources on different physical channels at the second moment; re-determining a target radio bearer resource and a target physical channel from the plurality of radio bearer resources and the plurality of physical channels based on the predicted block error rate; and when the low-orbit satellite operates to a second position, receiving second transmission data sent by the terminal at a second moment based on the target radio bearer resource and the target physical channel, wherein the first position and the second position are different.

The communication method between the low orbit satellite and the terminal can be applied to the terminal, can also be applied to a server side, and can also be software running in the terminal or the server side. In some embodiments, the terminal may be a smart phone, tablet, notebook, desktop, etc.; the server side can be configured as an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, and a cloud server for providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDNs, basic cloud computing services such as big data and artificial intelligent platforms and the like; the software may be an application or the like that implements a communication method of the low-orbit satellite with the terminal, but is not limited to the above form.

The subject application is operational with numerous general purpose or special purpose computer system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like. The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

In the various embodiments of the present application, when information related to the identity or characteristics of a user according to user information, user location information, and the like is referred to, permission or consent of the user is obtained first, and the collection, use, processing, and the like of the data complies with relevant laws and regulations and standards. In addition, when the embodiment of the application needs to acquire the sensitive personal information of the user, the independent permission or independent consent of the user is obtained first, and after the independent permission or independent consent of the user is obtained definitely, the related data such as the first transmission data and the second transmission data which are necessary for enabling the embodiment of the application to operate normally are acquired.

The method, system and device for communication between a low-orbit satellite and a terminal provided in the embodiments of the present application are specifically described through the following embodiments, and the communication system between a low-orbit satellite and a terminal in the embodiments of the present application is described first:

as shown in fig. 1, fig. 1 is a schematic view of an application scenario of a low-orbit satellite-to-terminal communication system provided in the embodiment of the present application, where the low-orbit satellite-to-terminal communication system includes a terminal 11, a low-orbit satellite 12, and a server 13, for example, the terminal 11 may be a mobile phone, the terminal 11 is communicatively connected to the low-orbit satellite 12, a ground control station is further disposed on the ground, and the ground control station is provided with the server 13, where the server 13 is configured to store data related to the communication between the terminal 11 and the low-orbit satellite 12, such as a terminal device identifier of the terminal 11 and location information corresponding to each terminal 11, so as to better implement the communication between the terminal 11 and the low-orbit satellite 12. It should be noted that, one server 13 may be communicatively connected to a plurality of terminals 11, but when the terminals 11 are moved to different places, the terminals 11 may also be connected to different servers 13, and specific connection conditions may be set according to actual conditions, which is not limited in this embodiment.

The communication method between the low-orbit satellite and the terminal in the embodiment of the application can be illustrated by the following embodiment.

As shown in fig. 2, fig. 2 is an optional flowchart of a method for communication between a low-orbit satellite and a terminal according to an embodiment of the present application, where the method in fig. 2 may include, but is not limited to, steps S101 to S105.

In step S101, when the low-orbit satellite is operated to the first position, an initial radio bearer resource and an initial physical channel are determined from a plurality of radio bearer resources and a plurality of physical channels.

In some embodiments, as shown in fig. 3, fig. 3 is a schematic diagram illustrating the relative positions of an optional low-orbit satellite and a terminal in a communication method between the low-orbit satellite and the terminal according to an embodiment of the present application, when the low-orbit satellite (for convenience of description, hereinafter may also be simply referred to as "satellite") moves to a first position, initial radio bearer resources and initial physical channels may be first determined from a plurality of alternative radio bearer resources and physical channels.

Further, when determining the initial radio bearer resources and the initial physical channels, qoS may be sent to the ground control station according to a method adopted by the related technology, and then the ground control station determines the corresponding initial radio bearer resources and initial physical channels, so as to first establish a communication connection between the satellite and the terminal for performing subsequent data transmission operation, and then, based on the transmitted data, the radio bearer resources and physical channels at the next moment may be quickly determined by using the communication method between the satellite and the terminal provided by the embodiment of the present application.

Step S102, based on the initial wireless bearing resource and the initial physical channel, receiving and analyzing the first transmission data sent by the terminal at the first moment to obtain the corresponding terminal characteristic information.

In some embodiments, after determining the initial radio bearer resource and the initial physical channel, the first transmission data sent by the terminal may be received based on the initial radio bearer resource and the initial physical channel, where the first transmission data may be text data, voice data, or image data.

Further, since the first transmission data carries information related to the terminal, when the satellite receives the first transmission data, the first transmission data can be analyzed to obtain corresponding terminal characteristic information, wherein the terminal characteristic information is used for representing identity information, position information, security authentication information and the like related to the terminal when the terminal transmits the first transmission data. Through the terminal characteristic information, the satellite can know the data receiving capacity and transmission, required transmission parameters, the climate condition and other information of the terminal when the first transmission data is transmitted, so that the satellite predicts and obtains the radio bearing resource and the physical channel at the next moment based on the terminal characteristic information at the last moment.

Step S103, inputting the terminal characteristic information into a pre-trained prediction model for prediction processing, and obtaining the prediction block error rate of data transmission of all radio bearer resources on different physical channels at the second moment.

In some embodiments, when the satellite moves to the second position as shown in fig. 3, the relative positions of the satellite and the terminal change, and the earth surface conditions between the satellite and the terminal change, so that the initial radio bearer resources and the initial physical channels when the satellite is in the first position are not applicable when the satellite is in the second position. The satellite side is preset with a pre-trained prediction model, the prediction model can perform prediction processing based on terminal characteristic information, and target radio bearing resources and target physical channels which can realize optimal communication between the satellite and the terminal when the satellite is in the second position are output.

Further, after the terminal characteristic information is input into the prediction model, a predicted Block Error Rate (BLER) of data transmission of all radio bearer resources at a second time (corresponding to the second position) on different physical channels is obtained, where the BLER characterizes a probability of occurrence of an Error in a data Block received under a specific condition, and can be used to evaluate reliability and performance of wireless communication, so that, based on the predicted Block Error Rate of data transmission of each radio bearer resource on different physical channels, a target radio bearer resource and a target physical channel at a next time (corresponding to the second time) can be rapidly determined.

Step S104, based on the predicted block error rate, the target radio bearer resource and the target physical channel are newly determined from the plurality of radio bearer resources and the plurality of physical channels.

In some embodiments, the target radio bearer resource and the target physical channel may be re-determined from the plurality of radio bearer resources and the plurality of physical channels based on the predicted block error rate.

Illustratively, the prediction model can output a prediction block error rate of data transmission of each radio bearer resource on different physical channels, and the radio bearer resource and the physical channel corresponding to the smallest prediction block error rate can be selected as the target radio bearer resource and the target physical channel.

In step S105, when the low-orbit satellite is operated to the second position, the second transmission data sent by the terminal at the second moment is received based on the target radio bearer resource and the target physical channel, wherein the first position and the second position are different.

In some embodiments, as shown in fig. 3, when the satellite is operated to the second location, the target radio bearer resources and the target physical channels for data transmission can be rapidly determined based on the above steps S101 to S104, so that the satellite can receive the second transmission data sent by the terminal or send the second transmission data to the terminal based on the target radio bearer resources and the target physical channels.

It can be understood that, in the communication method between the satellite and the terminal provided by the embodiment of the application, the QoS is not required to be sent to the ground control station by the satellite to determine the radio bearer resources and the physical channels corresponding to the next time, but after the terminal characteristic information related to the terminal is obtained, the radio bearer resources and the physical channels corresponding to the next time can be directly determined at the satellite side, so that the number of times of data transmission of the related transmission path between the satellite and the terminal is reduced, the efficiency of determining the radio bearer resources and the physical channels is improved, and the stability and the reliability of communication between the satellite and the terminal are enhanced.

As shown in fig. 4, fig. 4 is a flowchart of one implementation of step S102 in fig. 2, and in some embodiments, step S102 may include steps S201 to S204:

step S201, periodically receives terminal position information and climate data information of a terminal sent by a ground control station.

In some embodiments, the low-orbit satellite, the terminal, is also connected to a ground control station, which is capable of periodically transmitting terminal location information of the terminal to the satellite, the terminal location information being used to inform the satellite of the location of the terminal, so that the satellite selects the best communication resource according to the location of the terminal.

Further, the ground control station can determine the climate data information of the position of the terminal by connecting a third party service under the condition that the position information of the terminal is stored. Likewise, the ground control station may periodically transmit climate data information to the satellites to cause the satellites to select the best communication resources based on the climate in which the terminal is located.

Further, the climate data information may include one or more of air temperature, air pressure, humidity, cloud, precipitation, visibility and wind speed, or other relevant climate data information may be specifically set according to the actual situation, and the embodiment of the present application is not limited specifically.

Step S202, analyzing the first transmission data to obtain the terminal identity of the terminal and the transmission data identity.

In some embodiments, the satellite is capable of resolving the first transmission data sent by the terminal and obtaining, after resolution, a terminal identity (Quality of Service Flow Identifier, QFI) for characterizing a unique serial number of the terminal and a transmission data identity (QFI) for identifying a quality of service requirement of the first transmission data.

Illustratively, there are two simultaneous data streams to be transmitted during communication between the satellite and the terminal: one is a real-time video stream requiring lower latency and higher bandwidth, and the other is a file download, which requires less latency but requires greater bandwidth. In this case, a real-time video stream may be assigned a higher QFI value, such as qfi=5, to indicate a high quality of service requirement for the stream, while a file download stream may be assigned a lower QFI value, such as qfi=1, to indicate a lower quality of service requirement for the stream.

It should be noted that the QFI values and the corresponding qos requirements may be set according to practical situations, and the embodiments of the present application are only described with reference to the preferred embodiments, but are not limited thereto.

Step S203, corresponding service quality parameters are determined according to the transmission data identification.

In some embodiments, after the satellite and the terminal establish the transmission connection, the satellite may determine a quality of service parameter (QoS) corresponding to the QFI according to a mapping table or a configuration table. By way of example, qoS may specifically include 5GQoS identification (5 GQI), allocation and Retention Priority (ARP), reflective QoS attribute (RAQ), notification control (Notification Control), stream Bit rate (Flow Bit Rates), total Bit rate (Aggregate Bit Rates), maximum packet loss rate (Maximum Packet Loss Rate), and the like.

Further, qoS typically includes bandwidth, delay, jitter, etc. parameters in particular; wherein, the bandwidth resource which can be allocated can be determined by QoS bandwidth parameter, the delay level when transmitting data can be controlled and ensured by QoS delay parameter, and the stability and continuity of data flow can be ensured by QoS jitter parameter.

Illustratively, different QFI can be correspondingly determined according to different QFI, and the following description will be given with the above examples, where when qfi=1, qoS bandwidth parameter is low, qoS delay parameter and QoS jitter parameter are large, which characterizes that bandwidth is low, delay is large, and transmission performance is unstable when data transmission is performed; when qfi=5, the QoS bandwidth parameter is higher, the QoS delay parameter and the QoS jitter parameter are smaller, which characterizes that the bandwidth is higher, the delay is smaller and the transmission performance is stable when data transmission is performed, so that when a plurality of transmission tasks exist, a plurality of transmission tasks can be satisfied simultaneously through reasonable resource allocation, and high-quality communication between the satellite and the terminal is realized.

Step S204, terminal characteristic information corresponding to the first transmission data is obtained according to the terminal identity, the transmission data identity, the service quality parameter, the terminal position information and the climate data information.

In some embodiments, the terminal characteristic information for determining the target radio bearer resource and the target physical channel may be obtained according to the terminal identity, the transmission data identity, the quality of service parameter, the terminal location information, and the climate data information obtained in steps S201 to S203.

It should be noted that, the terminal feature information may further include network interface information of the terminal, the content included in the terminal feature information may be specifically set according to the actual situation, and the purpose of adding on the basis of the terminal feature information is to improve the output accuracy of the prediction model used later, which is described in the present application only by the preferred embodiment, but not specifically limited.

Further, as shown in fig. 5, fig. 5 is an optional mapping diagram of a communication method between a low-orbit satellite and a terminal according to an embodiment of the present application, after determining terminal feature information, a prediction block error rate of data transmission of each radio bearer resource on different physical channels at a next moment may be determined according to a prediction model, and then corresponding radio bearer resources and physical channels are determined according to the prediction block error rate, where n and x each represent a number, and the specific number may be set according to an actual situation.

As shown in fig. 6, fig. 6 is another implementation flowchart of step S102 in fig. 2, and in some embodiments, step S103 may include steps S301 to S302:

step S301, inputting the terminal characteristic information into a prediction model, and carrying out characteristic extraction on the terminal characteristic information based on the prediction model to obtain the terminal characteristic information after characteristic extraction.

In some embodiments, the prediction model may be a Long Short-Term Memory neural network model (LSTM), as shown in fig. 7, and fig. 7 is a schematic diagram of an alternative prediction model of a low-orbit satellite-to-terminal communication method according to an embodiment of the present application, where the LSTM model includes an input layer, a loop layer (may also be called a prediction layer), and an output layer. Inputting terminal characteristic information (Label) representing a first moment into an input layer of an LSTM model, outputting a predicted block error rate obtained by prediction at an output layer after data processing of a circulating layer, and determining corresponding target radio bearer resources and target physical channels according to the predicted block error rate, wherein x and y both represent quantities, and the values of x and y can be set according to actual conditions.

Further, a specific propagation process of the loop layer is shown in fig. 8, fig. 8 is a schematic diagram of an optional prediction model of a communication method between a low-orbit satellite and a terminal according to an embodiment of the present application, and feature extraction is performed on terminal feature information input at a previous time by using a formula shown in fig. 8, and terminal feature information after feature extraction is obtained, where specific calculation formulas are shown in the following formulas (1) to (8):

f(t)＝σ(t)(W _f x(t)+U _f h(t-1)+B _f ) (1)

I(t)＝σ(t)(W _i x(t)+U _i h(t-1)+B _i ) (2)

O(t)＝σ(t)(W _o x(t)+U _o h(t-1)+B _o ) (5)

h(t)＝O(t)*C(t) (6)

σ(x)＝(1+e ^-x ) ^-1 (7)

tanh(x)＝(e ^x +e ^-x ) ^-1 (e ^x -e ^-x ) (8)

Wherein x is the input of the cyclic layer, h and C are the hidden states in the two cyclic layers, h is the output of the cyclic layer, t represents the operation at a certain moment, sigma is a logic function (sigmoid function), and tanh is a hyperbolic tangent function for hiding the output of the neuron, and the range of values is (0, 1). In addition, W, U and B are related parameters, four groups are total, where W is the relationship between input and output, U is the historical correlation of output, B is the offset, all parameters are initialized to random values, and the hidden state is initialized to zero.

Further, I (t) is the input gate of the neural network, f (t) is the forgetting gate of the neural network, 0 (t) is the output gate of the neural network,c (t) is a memory state, h (t) is a radio bearer resource mapping sequence corresponding to the input x (t) data, and 0 (t) is a physical channel mapping sequence corresponding to the x (t) data.

Further, as shown in fig. 7, after obtaining C (t) and h (t), the output values C (t+1) and h (t+1) at the next moment may be obtained again according to formulas (1) to (8).

Further, multiple loop layers may be set to improve the accuracy of the results ultimately output at the output layer. It should be noted that the number of layers of the circulation layer may be set according to practical situations, and the embodiment of the present application is not specifically limited.

Step S302, according to the terminal characteristic information after the characteristic extraction, the prediction processing is carried out, and the prediction block error rate of data transmission of all radio bearer resources on different physical channels at the second moment is obtained.

In some embodiments, feature extraction processing is performed on terminal feature information based on a plurality of loop layers, so that data with a small relation with a prediction result can be forgotten, data with relevance to the prediction result can be reserved, and finally, the prediction block error rate of data transmission of all radio bearer resources on different physical channels at the second moment is output at the output layer.

As shown in fig. 9, fig. 9 is a flowchart of one implementation of step S104 in fig. 2, and in some embodiments, step S104 may include steps S401 to S404:

in step S401, when the predicted block error rate is smaller than a preset block error rate threshold, it is determined that the radio bearer resource and the physical channel corresponding to the predicted block error rate are the radio bearer resource to be selected and the physical channel to be selected.

In some embodiments, the satellite end is further preset with a block error rate threshold, where the block error rate threshold is used to indicate a communication error probability that the satellite can accept when running in different scenes. Because the prediction model can output the prediction block error rate of each radio bearer resource for data transmission on different physical channels, the prediction block error rate can be compared with a block error rate threshold, in general, it can be determined that the radio bearer resource and the physical channel with the prediction block error rate smaller than the block error rate threshold can meet the data transmission requirement of the current scene, and the corresponding radio bearer resource and physical channel are the radio bearer resource to be selected and the physical channel to be selected.

Step S402, determining a target radio bearer resource and a target physical channel based on the prediction block error rate.

In some embodiments, one or more of the radio bearer resources and physical channels used by the satellites and terminals in data transmission may be used. When the satellite and the terminal use only one radio bearer resource and physical channel for data transmission, the radio bearer resource and the physical channel with the smallest predicted block error rate can be selected as a target radio bearer resource and a target physical channel from the radio bearer resource to be selected and the physical channel to be selected.

Further, when the satellite and the terminal use only a plurality of radio bearer resources and physical channels for data transmission, the target radio bearer resources and the target physical channels with smaller prediction block error rates can be selected from the radio bearer resources to be selected and the physical channels to be selected.

In step S403, or based on the preset priority order of the candidate physical channels, the target radio bearer resource and the target physical channel are determined.

In some embodiments, the physical channels may be preset with a priority order, and a priority with a higher priority order is set to be determined as the target physical channel during the communication between the satellite and the terminal. For example, there are three physical channels to be selected, namely, a physical channel to be selected a, a physical channel to be selected B and a physical channel to be selected C, wherein the respective prediction block error rates are a1, B1, C1, and the priority order is a2, B2, C2, respectively, wherein a1< B1< C1, a2< B2< C2, and at this time, if only one physical channel is needed, determining that the physical channel to be selected C is the target physical channel. Likewise, the target radio bearer resource may be determined in accordance with such a method.

In step S404, if the target radio bearer resource and/or the target physical channel cannot meet the communication requirement, the target radio bearer resource and/or the target physical channel is re-determined from the remaining radio bearer resources to be selected and the remaining physical channel to be selected according to the predicted block error rate.

In some embodiments, if it is determined at the second location that the target radio bearer resource and the target physical channel are abnormally disconnected after a period of communication, a new target radio bearer resource and/or target physical channel may be quickly determined from the remaining radio bearer resources to be selected and the remaining physical channel according to the predicted block error rate.

Illustratively, next to the description of the example in the above step S403, when it is determined that the candidate physical channel C, which is the target physical channel, has an abnormal failure, a new target physical channel may be newly determined from the candidate physical channel a and the candidate physical channel B. Because the physical channels selected according to the priority order have abnormal faults, the method for indicating the physical channels selected according to the priority order is not high in reliability, and at the moment, the to-be-selected physical channel A with smaller prediction block error rate can be selected as a new target physical channel, so that the rapid switching of the target physical channel is realized, and the degradation of data transmission quality caused by untimely replacement of the transmitted physical channel is avoided. Likewise, the target radio bearer resource may be determined in accordance with such a method.

In general, when the target physical channel is changed, the target radio bearer resources will also change, however, if a dedicated frequency band and a dedicated resource exist between the satellite and the terminal, the target radio bearer resources will not change, and at this time, when the target physical channel fails abnormally, only the new target physical channel may be determined again, so that the original target radio bearer resources may be maintained unchanged. The setting may be specifically performed according to actual situations, and the embodiment of the present application is not specifically limited.

As shown in fig. 10, fig. 10 is another optional flowchart of a method for communication between a low-orbit satellite and a terminal according to an embodiment of the present application, where the method in fig. 10 may include, but is not limited to, steps S501 to S504.

In step S501, a preset sample transmission data set is obtained, where the sample transmission data set includes a plurality of sample transmission data, and each transmission data includes a corresponding block error rate tag.

In some embodiments, the LSTM model used in the present application needs to be trained in advance, and first, a sample transmission data set is obtained, where the sample transmission data set may be obtained from a database storing historical communication data of satellites and terminals, or may be obtained from a third party open source database.

Further, the obtained one sample transmission data set generally includes a plurality of sample transmission data, and each sample transmission data further includes a corresponding block error rate tag. The block error rate label is used for representing a prediction block error rate expected to be output when sample transmission data is input to the prediction model, and parameters of the prediction model can be adjusted based on errors between the block error rate label and the prediction model, so that the performance of the prediction model is improved.

Step S502, selecting any sample transmission data from the sample transmission data set, and inputting the sample transmission data into a prediction model to obtain a predicted sample block error rate.

In some embodiments, any number of sample transmission data may be selected from the sample transmission data set and input into the prediction model, i.e., the sample transmission data may be part of the sample transmission data set, or the sample transmission data may be all of the sample transmission data set, and the prediction model may improve its prediction accuracy in continuous training based on a large number of sample transmission data.

Further, sample transmission data is input into a prediction model, wherein the sample transmission data simulates data transmitted by a terminal in different scenes, and based on the data, the prediction model can predict and obtain sample block error rates of data transmission of each wireless bearing resource on different physical channels at the next moment.

Step S503, calculating to obtain the block error rate loss value of the prediction model according to the block error rate label and the sample block error rate.

In some embodiments, the difference between the block error rate tag and the sample block error rate is calculated to obtain a block error rate loss value, wherein a larger block error rate loss value indicates a worse effect of the prediction model, and a smaller block error rate loss value indicates a better effect of the prediction model.

And step S504, adjusting parameters of the prediction model according to the block error rate loss value to obtain a trained prediction model.

In some embodiments, according to the block error rate loss value, various parameters of the prediction model, such as learning rate, may be adjusted, and based on the adjusted parameters, the prediction model is retrained, and when the block error rate loss value of the prediction model is lower than a preset threshold, the prediction model at this time may be considered to have better performance, so as to achieve the expected prediction result.

As shown in fig. 11, fig. 11 is a flowchart of one implementation of step S502 in fig. 10, and in some embodiments, step S502 may include steps S601 to S604:

step S601, inputting sample transmission data into a first prediction layer to obtain a first sample error rate, and inputting sample transmission data into a second prediction layer to obtain a second sample error rate.

In some embodiments, in order to improve the efficiency and performance of prediction, the prediction model in the embodiments of the present application is provided with a first prediction layer and a second prediction layer, where the first prediction layer can output and obtain a first sample error rate, and the second prediction layer can output and obtain a second sample error rate.

It should be noted that the number of prediction layers may be set according to practical situations, and the present application is only illustrated by a preferred embodiment, but not limited thereto.

Step S602, calculating the variance between the error rate label and the first sample error rate and the second sample error rate to obtain a prediction error value.

In some embodiments, the prediction error value is calculated first, and the prediction error value may be calculated by the following equation (9):

wherein y is _ip Representing the predicted first or second sample error rate, y _r Representing the bit error rate tag.

Step S603, based on the prediction error value, obtaining a first prediction weight and a second prediction weight corresponding to the first prediction layer and the second prediction layer by using a reciprocal variance method.

In some embodiments, after calculating the prediction error value corresponding to the first sample error rate and the second sample error rate, calculating the corresponding first prediction weight and second prediction weight by using a reciprocal variance method, where the first prediction weight and the second prediction weight may be calculated by the following formula (10):

Wherein, for the embodiments of the application, m is 2,w _i Is the weight coefficient of the i-th model.

Step S604, multiplying the first prediction weight and the first sample error rate to obtain a first multiplication value, multiplying the second prediction weight and the second sample error rate to obtain a second multiplication value, and adding the first multiplication value and the second multiplication value to obtain the sample error rate.

In some embodiments, after obtaining the first sample error rate or the second sample error rate and the respective corresponding prediction weights, the sample error rate may be calculated by the following formula (11):

y _p ＝w _i y _1p +w ₂ y _2p (11)

in order to better understand the communication method between the low-orbit satellite and the terminal provided by the embodiment of the present application, a complete example is given below:

first, training of the predictive model is required:

(1) The low orbit satellite collects transmission data in a time period of T1=100050×60ms;

(2) The satellite analyzes the transmission data in the T1 time period to generate a terminal identity ID and a transmission data identity QFI;

(3) The satellite obtains the terminal position information and the climate data information according to the terminal identity ID inquiry;

(4) The low orbit satellite obtains the corresponding Qos parameter configuration according to the transmission data identification inquiry;

(5) Calculating BLER on all physical channel resources PHYx allocated to the terminal;

(6) The low orbit satellite processes the data to generate a characteristic tag;

(7) Training the data acquired in the T1 time according to the time interval of T2=60 s, namely, every T2 time until the data of the T1 time is trained, namely, training T1/T2=50 times, and obtaining a prediction model after training when the prediction model meets the expected training requirement.

In the aspect of practical application:

(1) The terminal accesses the network and applies for data transmission service;

(2) Establishing initial connection between a satellite and a terminal, and receiving first transmission data sent by the terminal at the current moment when the satellite is at a first position;

(2) Based on the initial connection, the satellite terminal receives terminal position information and climate data information of the terminal periodically reported by a ground control station;

(3) Analyzing the first transmission data to obtain terminal characteristic information related to the terminal;

(4) Inputting the terminal characteristic information into a trained prediction model to obtain a prediction block error rate;

(5) Determining a target radio bearer resource and a target physical channel corresponding to the next moment according to the predicted block error rate;

(6) And receiving second transmission data sent by the terminal at a second position based on the target radio bearer resource and the target physical channel.

As shown in fig. 12, fig. 12 is a flowchart of still another alternative method for communication between a low-orbit satellite and a terminal according to an embodiment of the present application, where the method in fig. 12 may include, but is not limited to, steps S701 to S105.

In step S701, when the low-orbit satellite is operated to the first position, an initial radio bearer resource and an initial physical channel are determined according to initial information transmitted by the low-orbit satellite.

In some embodiments, for the terminal side, when the satellite is operating to the first location, the satellite side may send initial information to the terminal, where the initial information is used to characterize initial radio bearer resources and initial physical channels used by the satellite and the terminal in initial communications.

Step S702, based on the initial radio bearer resources and the initial physical channel, first transmission data is sent to the low-orbit satellite at a first moment, so that the low-orbit satellite receives and analyzes the first transmission data to obtain corresponding terminal characteristic information, and predicts a target radio bearer resource and a target physical channel corresponding to a second moment according to the terminal characteristic information.

Further, the terminal may send first transmission data to the satellite based on the determined initial radio bearer resource and the initial physical channel, where the first transmission data carries characteristic information of the terminal when the first transmission data is transmitted.

Further, the satellite can analyze the first transmission data to obtain terminal characteristic information, input the terminal characteristic information into a pre-trained prediction model, and obtain a target radio bearer resource and a target physical channel which are correspondingly predicted at the second moment according to the prediction model.

In step S703, the target radio bearer resource and the target physical channel are obtained according to the target information sent by the low-orbit satellite.

Further, when the satellite determines the target radio bearer resource and the target physical channel corresponding to the next time, the satellite may generate target information according to the target radio bearer resource and the target physical channel, and send the target information to the terminal.

In step S704, when the low-orbit satellite is operating to the second location, second transmission data is transmitted to the low-orbit satellite at the second moment based on the target radio bearer resource and the target physical channel, wherein the first location and the second location are different.

Further, the terminal may analyze according to the target information to determine the target radio bearer resource and the target physical channel, and when the satellite operates to the second position at the second moment, may send second transmission data to the satellite terminal according to the target radio bearer resource and the target physical channel, or send the second transmission data to the satellite terminal according to the target radio bearer resource and the target physical channel, and receive the second transmission data sent by the satellite terminal.

As shown in fig. 13, fig. 13 is a schematic diagram of an optional system function module of a method for communication between a low-orbit satellite and a terminal according to an embodiment of the present application, and the embodiment of the present application further provides a system for communication between a low-orbit satellite and a terminal, which may implement the method for communication between a low-orbit satellite and a terminal, where the system for communication between a low-orbit satellite and a terminal includes:

An initial module 801 for determining an initial radio bearer resource and an initial physical channel from a plurality of radio bearer resources and a plurality of physical channels when the low-orbit satellite is operating to a first location;

a first transmission module 802, configured to receive and parse first transmission data sent by a terminal at a first time based on an initial radio bearer resource and an initial physical channel, to obtain corresponding terminal feature information;

the prediction module is used for inputting the terminal characteristic information into a pre-trained prediction model to perform prediction processing, so as to obtain the prediction block error rate of data transmission of all radio bearer resources on different physical channels at the second moment;

a target module 803 for re-determining a target radio bearer resource and a target physical channel from the plurality of radio bearer resources and the plurality of physical channels based on the predicted block error rate;

a second transmission module 804, configured to receive, when the low-orbit satellite is operating to a second location, second transmission data sent by the terminal at a second moment based on the target radio bearer resource and the target physical channel, where the first location and the second location are different.

In some embodiments, as shown in fig. 3, fig. 3 is a schematic diagram illustrating a relative position of an optional low-orbit satellite and a terminal in a communication method between the low-orbit satellite and the terminal according to an embodiment of the present application, when the low-orbit satellite moves to a first position, initial radio bearer resources and initial physical channels may be first determined from a plurality of alternative radio bearer resources and physical channels.

In some embodiments, when the satellite reaches the second position as shown in fig. 3, the relative positions of the satellite and the terminal change, and at this time, the earth surface conditions between the satellite and the terminal also change, and the initial radio bearer resources and the initial physical channel when the satellite is in the first position are not applicable when the satellite is in the second position. The satellite side is preset with a pre-trained prediction model, the prediction model can perform prediction processing based on terminal characteristic information, and target radio bearing resources and target physical channels which can realize optimal communication between the satellite and the terminal when the satellite is in the second position are output.

Further, after the terminal characteristic information is input into the prediction model, a predicted block error rate (BLER) of data transmission of all radio bearer resources at a second time (corresponding to the second position) on different physical channels is obtained, where the BLER characterizes a probability of occurrence of an error in a data block received under a specific condition, and can be used to evaluate reliability and performance of wireless communication, so that, based on the predicted block error rate of data transmission of each radio bearer resource on different physical channels, a target radio bearer resource and a target physical channel at a next time (corresponding to the second time) can be quickly determined.

The specific implementation of the communication system between the low-orbit satellite and the terminal is basically the same as the specific embodiment of the communication method between the low-orbit satellite and the terminal, and will not be described herein. On the premise of meeting the requirements of the embodiment of the application, other functional modules can be further arranged in the communication system of the low-orbit satellite and the terminal so as to realize the communication method of the low-orbit satellite and the terminal in the embodiment.

The embodiment of the application also provides electronic equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the communication method of the low-orbit satellite and the terminal when executing the computer program. The electronic equipment can be any intelligent terminal including a tablet personal computer, a vehicle-mounted computer and the like.

As shown in fig. 14, fig. 14 is a schematic hardware structure of an electronic device provided in an embodiment of the present application, where the electronic device includes:

the processor 901 may be implemented by a general-purpose CPU (Central Processing Unit ), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, etc. for executing related programs to implement the technical solutions provided by the embodiments of the present application;

The Memory 902 may be implemented in the form of a Read Only Memory (ROM), a static storage device, a dynamic storage device, or a random access Memory (Random Access Memory, RAM). The memory 902 may store an operating system and other application programs, and when the technical solutions provided in the embodiments of the present application are implemented by software or firmware, relevant program codes are stored in the memory 902, and the processor 901 is used to invoke a communication method for implementing the low-orbit satellite and the terminal in the embodiments of the present application;

an input/output interface 903 for inputting and outputting information;

the communication interface 904 is configured to implement communication interaction between the device and other devices, and may implement communication in a wired manner (e.g. USB, network cable, etc.), or may implement communication in a wireless manner (e.g. mobile network, WIFI, bluetooth, etc.);

a bus 905 that transfers information between the various components of the device (e.g., the processor 901, the memory 902, the input/output interface 903, and the communication interface 904);

wherein the processor 901, the memory 902, the input/output interface 903 and the communication interface 904 are communicatively coupled to each other within the device via a bus 905.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the communication method of the low-orbit satellite and the terminal when being executed by a processor.

The memory, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the processor, the remote memory being connectable to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The embodiments described in the embodiments of the present application are for more clearly describing the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application, and as those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

It will be appreciated by those skilled in the art that the technical solutions shown in the figures do not constitute limitations of the embodiments of the present application, and may include more or fewer steps than shown, or may combine certain steps, or different steps.

The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Those of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.

The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in this application, "at least one (item)" and "a number" mean one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

In the several embodiments provided in this application, it should be understood that the disclosed systems and methods may be implemented in other ways. For example, the system embodiments described above are merely illustrative, e.g., the division of the above elements is merely a logical functional division, and there may be additional divisions in actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including multiple instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing a program.

Preferred embodiments of the present application are described above with reference to the accompanying drawings, and thus do not limit the scope of the claims of the embodiments of the present application. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present application shall fall within the scope of the claims of the embodiments of the present application.

Claims

1. The communication method of the low-orbit satellite and the terminal is characterized by being applied to the low-orbit satellite, wherein the low-orbit satellite is in communication connection with the terminal, and the low-orbit satellite and the terminal comprise a plurality of selectable radio bearer resources and physical channels when carrying out data transmission;

2. The method of claim 1, wherein the low-orbit satellite and the terminal are further connected to a ground control station;

3. The method for communicating between a low-orbit satellite and a terminal according to claim 2, wherein the inputting the terminal characteristic information into a pre-trained prediction model for prediction processing, to obtain the prediction block error rate of data transmission of all the radio bearer resources on different physical channels at the second moment, includes:

4. The method according to claim 3, wherein the re-determining the target radio bearer resource and the target physical channel from the plurality of radio bearer resources and the plurality of physical channels based on the prediction block error rate comprises:

5. The method of communicating with a terminal of claim 1, wherein the predictive model is trained by the steps of:

6. The method according to claim 5, wherein the prediction model includes a first prediction layer and a second prediction layer, and the predicted sample block error rate includes a first sample block error rate and a second sample block error rate;

7. The communication method of the low-orbit satellite and the terminal is characterized by being applied to the terminal, wherein the terminal is in communication connection with the low-orbit satellite, and the low-orbit satellite and the terminal comprise a plurality of selectable radio bearer resources and physical channels when data transmission is carried out;

8. A low-orbit satellite-to-terminal communication system, comprising:

9. An electronic device comprising a memory storing a computer program and a processor that when executing the computer program implements the method of low orbit satellite to terminal communication according to any one of claims 1 to 7.

10. A computer readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the method of communication of a low-orbit satellite with a terminal according to any one of claims 1 to 7.