Paging method and system based on satellite ephemeris and terminal position, and core network

Abstract

The invention discloses a paging method and system based on satellite ephemeris and terminal positions and a core network, and the method comprises the steps: obtaining and preprocessing the real-time position information of a satellite terminal, obtaining the grid position information, and storing the grid position information in a database; generating a paging request according to a user demand, querying grid position information of a satellite terminal in a database, and screening out a target satellite according to the grid position information; and extracting the satellite information to generate a paging instruction, and sending the paging instruction to the target satellite to obtain a paging operation result. According to the method, a complete multi-dimensional data fusion mechanism is established by fusing terminal position information and satellite ephemeris data, the method comprises a unified data processing process of integrating terminal positions, moving characteristics and ephemeris information, self-adaptive division and dynamic boundary adjustment of grids are realized, a predictive paging strategy is realized, and the paging efficiency is improved. The paging success rate under the low earth orbit satellite network is obviously improved, and the waste of satellite resources is reduced.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication analysis technology, and in particular to a paging method, system, core network and computer-readable storage medium based on satellite ephemeris and terminal position. Background Art

[0002] The current mobile communication network mainly uses fixed cell-based paging technology, which is based on the fixed location of ground base stations. In traditional cellular networks, the network manages the location of ground base stations through statically divided tracking areas and uses a broadcast paging mechanism to locate and find user terminals.

[0003] However, the existing satellite network paging technology fails to fully consider the characteristics of the continuous motion of low-orbit satellites, and often adopts an overly large paging range, resulting in serious waste of satellite resources and a low paging success rate. In addition, the terminal location management and ephemeris management in the existing system are separated from each other, lacking multi-dimensional data fusion and intelligent decision-making mechanisms, which makes it difficult for the system to adapt to the needs of large-scale user access.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] The main purpose of the present invention is to provide a paging method, system, core network and computer-readable storage medium based on satellite ephemeris and terminal position, aiming to solve the problems in the prior art that when performing satellite network paging, the paging range is too large, resulting in a low paging success rate, and the terminal position management and ephemeris management are separated from each other, resulting in a lack of multi-dimensional data fusion and intelligent decision-making mechanism.

[0006] To achieve the above object, the present invention provides a paging method based on satellite ephemeris and terminal position, the paging method based on satellite ephemeris and terminal position comprising the following steps:

[0007] Acquire the real-time location information of the satellite terminal sent by the satellite cluster, pre-process the real-time location information to obtain grid location information, and store the grid location information in a database;

[0008] Generate a paging request according to user demand, query the grid location information of the satellite terminal in the database according to the paging request, and select a target satellite in the satellite cluster according to the grid location information;

[0009] Extract satellite information of the target satellite, generate a paging instruction according to the satellite information, send the paging instruction to the target satellite, and receive a paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

[0010] Optionally, the paging method based on satellite ephemeris and terminal position, wherein the acquiring real-time position information of the satellite terminal sent by the satellite cluster, preprocessing the real-time position information to obtain grid position information, and storing the grid position information in a database, specifically includes:

[0011] Constructing an access management function module and acquiring real-time location information of a satellite terminal, wherein the real-time location information is sent by the satellite cluster to the access management function module;

[0012] Constructing a location management function module, and transmitting the real-time location information in the access management function module to the location management function module for preprocessing to obtain grid location information;

[0013] The grid position information is stored in a connected database.

[0014] Optionally, the paging method based on satellite ephemeris and terminal location, wherein the building of a location management function module and transmitting the real-time location information in the access management function module to the location management function module for preprocessing to obtain grid location information, specifically includes:

[0015] Constructing a location management function module, and transmitting the real-time location information in the access management function module to the location management function module;

[0016] The ground grid information is input into the position management function module, and the position management function module calculates the grid position to which the longitude and latitude of the satellite terminal belong according to the real-time position information and the ground grid information to obtain the grid position information.

[0017] Optionally, the paging method based on satellite ephemeris and terminal position, wherein the ground grid information is input into the position management function module, and the position management function module calculates the grid position to which the latitude and longitude of the satellite terminal belong according to the real-time position information and the ground grid information to obtain the grid position information, and then further includes:

[0018] The real-time location information of the satellite terminal is updated in real time, and the grid location of the satellite terminal is updated according to the updated real-time location information to obtain the real-time updated grid location information.

[0019] Optionally, the paging method based on satellite ephemeris and terminal position, wherein the paging request is generated according to user demand, grid location information of the satellite terminal is searched in the database according to the paging request, and a target satellite is screened out in the satellite cluster according to the grid location information, specifically includes:

[0020] Inputting the user's paging demand into the access management function module and outputting a paging request, wherein the paging request is generated by the access management function module according to the paging demand;

[0021] According to the paging request, querying the grid location information of the satellite terminal in the database, and inputting the grid location information into the constructed paging control function module;

[0022] Inputting the paging request into the paging control function module, the paging control function module confirming a target satellite in the satellite cluster according to the paging request and the grid location information, and outputting satellite information of the target satellite;

[0023] The target satellite represents the satellite currently passing by the satellite terminal.

[0024] Optionally, the paging method based on satellite ephemeris and terminal position, wherein the paging request is input into the paging control function module, the paging control function module confirms the target satellite in the satellite cluster according to the paging request and the grid position information, and outputs the satellite information of the target satellite, further comprising:

[0025] An ephemeris management function module is constructed, the grid location information and the satellite information are input into the ephemeris management function module, and ephemeris data is output.

[0026] Optionally, the paging method based on satellite ephemeris and terminal position, wherein the extracting satellite information of the target satellite, generating a paging instruction according to the satellite information, sending the paging instruction to the target satellite, and receiving the paging operation result sent by the target satellite, specifically includes:

[0027] Control the paging control function module to extract satellite information of the target satellite and generate a paging instruction according to the satellite information;

[0028] Transmitting the paging instruction to the access management function module, and sending the paging instruction to the target satellite through the access management function module;

[0029] According to the paging instruction, the target satellite is controlled to perform a paging operation, a paging operation result is generated, and the paging operation result is sent to the satellite terminal.

[0030] In addition, to achieve the above-mentioned purpose, the present invention further provides a paging system based on satellite ephemeris and terminal position, wherein the paging system based on satellite ephemeris and terminal position includes:

[0031] An information preprocessing module is used to obtain the real-time location information of the satellite terminal sent by the satellite cluster, preprocess the real-time location information, and store it in a database;

[0032] A target satellite screening module is used to generate a paging request according to user needs, query the current location information of the satellite terminal in the database according to the paging request, and screen the target satellite in the satellite cluster according to the current location information;

[0033] A paging execution module is used to extract satellite information of the target satellite, generate a paging instruction according to the satellite information, send the paging instruction to the target satellite, and receive a paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

[0034] In addition, to achieve the above-mentioned purpose, the present invention also provides a core network, wherein the core network includes: a memory, a processor, and a paging program based on satellite ephemeris and terminal position stored in the memory and executable on the processor, wherein the paging program based on satellite ephemeris and terminal position implements the steps of the paging method based on satellite ephemeris and terminal position as described above when executed by the processor.

[0035] In addition, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a paging program based on satellite ephemeris and terminal position, and when the paging program based on satellite ephemeris and terminal position is executed by a processor, the steps of the paging method based on satellite ephemeris and terminal position as described above are implemented.

[0036] In the present invention, the real-time location information of the satellite terminal sent by the satellite cluster is obtained, and the real-time location information is preprocessed and stored in a database; a paging request is generated according to user needs, and the current location information of the satellite terminal is queried in the database according to the paging request, and the target satellite is screened out in the satellite cluster according to the current location information; the satellite information of the target satellite is extracted, a paging instruction is generated according to the satellite information, and the paging instruction is sent to the target satellite, and the paging operation result sent by the target satellite is received, wherein the paging operation result is generated by the target satellite according to the paging instruction. The present invention establishes a complete multi-dimensional data fusion mechanism by fusing terminal location information and satellite ephemeris data, including a unified data processing process that integrates terminal location, mobile characteristics and ephemeris information, realizes adaptive division of grids and dynamic boundary adjustment, realizes predictive paging strategies, significantly improves the paging success rate in low-orbit satellite networks, and reduces the waste of satellite resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flow chart of a preferred embodiment of the paging method based on satellite ephemeris and terminal position of the present invention;

[0038] Figure 2 It is a schematic diagram of a framework of a preferred embodiment of a paging method based on satellite ephemeris and terminal position of the present invention;

[0039] Figure 3 It is a flow chart of the implementation scheme of a preferred embodiment of the paging method based on satellite ephemeris and terminal position of the present invention;

[0040] Figure 4 It is a structural diagram of a preferred embodiment of a paging system based on satellite ephemeris and terminal position of the present invention;

[0041] Figure 5 This is a structural diagram of a preferred embodiment of the core network of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The paging method based on satellite ephemeris and terminal position described in the preferred embodiment of the present invention is as follows: Figure 1 As shown, the paging method based on satellite ephemeris and terminal position includes the following steps:

[0044] Step S10: acquiring the real-time location information of the satellite terminal sent by the satellite cluster, preprocessing the real-time location information to obtain grid location information, and storing the grid location information in a database.

[0045] Wherein, the real-time location information is sent by the satellite cluster to the access management function module. Figure 2 As shown in the figure, from the bottom to the top, it includes the terminal layer, access layer and core network layer. The terminal layer is mainly composed of satellite terminals, which can obtain their own location information and report their longitude and latitude to the core network. At this time, the grid location information (grid refers to the artificial division of the ground into many honeycomb-shaped areas, and then determine which grid the longitude and latitude of the terminal belongs to) is sent to the core network to determine the grid location of the subsequent satellite terminal.

[0046] Specifically, an access management function module is constructed to obtain real-time location information of the satellite terminal; a location management function module is constructed, and the real-time location information in the access management function module is transmitted to the location management function module for preprocessing to obtain grid location information; and the grid location information is stored in a connected database.

[0047] Furthermore, a location management function module is constructed to transmit the real-time location information in the access management function module to the location management function module; the ground grid information is input into the location management function module, and the location management function module calculates the grid position to which the longitude and latitude of the satellite terminal belong based on the real-time location information and the ground grid information to obtain the grid location information.

[0048] The core network layer is the core of the entire system, including the control plane and the data plane. The control plane is composed of the access management function (AMF), the location management function (LMF), the paging control function and the ephemeris management function (EMF), which jointly realize the terminal location management, ephemeris data processing and intelligent paging control; the data plane is managed by the user plane function (UPF), which handles user data forwarding.

[0049] Among them, in the location update stage, the satellite terminal first periodically sends a location update request to the satellite cluster. After receiving the location update message, the satellite cluster forwards the location update request to the access management function module in the core network. Subsequently, the access management function module passes the received location information of the satellite terminal to the location management function module for processing: the location management function module first determines which grid in the ground grid the longitude and latitude of the satellite terminal belongs to, and then caches the grid information (i.e., grid location information) to which the target user belongs to locally, so as to record the location information. Among them, the grid location information is stored locally in the form of the grid ID, so as to facilitate the visualization of user data and improve the efficiency of user query.

[0050] Furthermore, the real-time location information of the satellite terminal is updated in real time, and the grid location of the satellite terminal is updated according to the updated real-time location information to obtain the real-time updated grid location information.

[0051] Among them, Figure 3 As shown, as the satellite terminal periodically sends real-time location information, the core network will also update the grid location information in real time according to the real-time location information, and save all updated grid location information locally in the form of grid ID to ensure data integrity.

[0052] Step S20: Generate a paging request according to user demand, query the grid location information of the satellite terminal in the database according to the paging request, and select a target satellite in the satellite cluster according to the grid location information.

[0053] Specifically, the user's paging demand is input into the access management function module, and a paging request is output, wherein the paging request is generated by the access management function module according to the paging demand; according to the paging request, the grid location information of the satellite terminal is queried in the database, and the grid location information is input into the constructed paging control function module; the paging request is input into the paging control function module, and the paging control function module confirms the target satellite in the satellite cluster according to the paging request and the grid location information, and outputs the satellite information of the target satellite; wherein the target satellite represents the satellite currently passing overhead of the satellite terminal.

[0054] Furthermore, an ephemeris management function module is constructed, the grid location information and the satellite information are input into the ephemeris management function module, and ephemeris data is output.

[0055] Among them, in the paging optimization stage, when a terminal needs to be paged, the access management function module initiates a paging request to the paging control function module. The paging control function module first queries the access management function module for the terminal's location information, and at the same time obtains the latest ephemeris data from the ephemeris management function module. The paging control function module will calculate the target satellite based on this information: that is, the paging control module obtains the grid area to which the paged terminal belongs from the location management function module, and in combination with the ephemeris information, queries the ID of the satellite passing over the terminal at this moment, thereby obtaining the most optimized paging object, realizing adaptive division of the grid and dynamic boundary adjustment, which can significantly improve the paging success rate in the low-orbit satellite network and reduce the waste of satellite resources.

[0056] Step S30, extracting satellite information of the target satellite, generating a paging instruction according to the satellite information, sending the paging instruction to the target satellite, and receiving a paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

[0057] After the overhead satellite (ie, the target satellite) is determined according to the above steps, the satellite information of the target satellite can be obtained, and a paging instruction is generated accordingly. The target satellite performs a paging operation according to the paging instruction, thereby realizing a predictive paging strategy.

[0058] Specifically, the paging control function module is controlled to extract the satellite information of the target satellite, and a paging instruction is generated according to the satellite information; the paging instruction is transmitted to the access management function module, and the paging instruction is sent to the target satellite through the access management function module; according to the paging instruction, the target satellite is controlled to perform a paging operation, a paging operation result is generated, and the paging operation result is sent to the satellite terminal.

[0059] Among them, after the paging control function module queries the ID of the satellite passing over the terminal at this moment, it obtains the beam resources and current ephemeris data of the target satellite and transmits them to the access management function. The access management function then sends a directional paging instruction to the target satellite. The target satellite executes the paging operation according to the paging instruction and waits for the response of the satellite terminal. This optimized paging process based on location information and ephemeris data significantly improves the accuracy and efficiency of paging of the called satellite terminal, while reducing the waste of satellite resources.

[0060] The present invention establishes a complete multi-dimensional data fusion mechanism by fusing terminal location information and satellite ephemeris data, including a unified data processing process integrating terminal location, mobility characteristics and ephemeris information, realizing adaptive grid division and dynamic boundary adjustment, and implementing a predictive paging strategy, which significantly improves the paging success rate in low-orbit satellite networks and reduces the waste of satellite resources.

[0061] Furthermore, if Figure 4 As shown, based on the above-mentioned paging method based on satellite ephemeris and terminal position, the present invention also provides a paging system based on satellite ephemeris and terminal position, wherein the paging system based on satellite ephemeris and terminal position includes:

[0062] The information preprocessing module 51 is used to obtain the real-time location information of the satellite terminal sent by the satellite cluster, preprocess the real-time location information, and store it in the database;

[0063] The target satellite screening module 52 is used to generate a paging request according to user needs, query the current location information of the satellite terminal in the database according to the paging request, and screen the target satellite in the satellite cluster according to the current location information;

[0064] The paging execution module 53 is used to extract the satellite information of the target satellite, generate a paging instruction according to the satellite information, send the paging instruction to the target satellite, and receive the paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

[0065] Furthermore, if Figure 5As shown, based on the above-mentioned paging method and system based on satellite ephemeris and terminal position, the present invention also provides a core network accordingly, and the core network includes a processor 10, a memory 20 and a display 30. Figure 5 Only some components of the core network are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0066] In some embodiments, the memory 20 may be an internal storage unit of the core network, such as a hard disk or memory of the core network. In other embodiments, the memory 20 may also be an external storage device of the core network, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the core network. Further, the memory 20 may also include both an internal storage unit of the core network and an external storage device. The memory 20 is used to store application software and various types of data installed in the core network, such as the program code of the core network. The memory 20 may also be used to temporarily store data that has been output or is to be output. In one embodiment, a paging program 40 based on satellite ephemeris and terminal location is stored on the memory 20, and the paging program 40 based on satellite ephemeris and terminal location can be executed by the processor 10, thereby realizing the paging method based on satellite ephemeris and terminal location in the present application.

[0067] In some embodiments, the processor 10 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run the program code or process data stored in the memory 20, such as executing the paging method based on satellite ephemeris and terminal location.

[0068] In some embodiments, the display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 30 is used to display information on the core network and to display a visual user interface. The components of the core network communicate with each other via a system bus.

[0069] In one embodiment, when the processor 10 executes the paging program 40 based on satellite ephemeris and terminal location in the memory 20, the following steps are implemented:

[0070] Acquire the real-time location information of the satellite terminal sent by the satellite cluster, pre-process the real-time location information, and store it in a database;

[0071] Generate a paging request according to user demand, query the current location information of the satellite terminal in the database according to the paging request, and select a target satellite in the satellite cluster according to the current location information;

[0072] Extract satellite information of the target satellite, generate a paging instruction according to the satellite information, send the paging instruction to the target satellite, and receive a paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

[0073] The acquiring of the real-time location information of the satellite terminal sent by the satellite cluster, preprocessing the real-time location information to obtain grid location information, and storing the grid location information in a database specifically includes:

[0074] Constructing an access management function module and acquiring real-time location information of a satellite terminal, wherein the real-time location information is sent by the satellite cluster to the access management function module;

[0075] Constructing a location management function module, and transmitting the real-time location information in the access management function module to the location management function module for preprocessing to obtain grid location information;

[0076] The grid position information is stored in a connected database.

[0077] The step of constructing a location management function module and transmitting the real-time location information in the access management function module to the location management function module for preprocessing to obtain grid location information specifically includes:

[0078] Constructing a location management function module, and transmitting the real-time location information in the access management function module to the location management function module;

[0079] The ground grid information is input into the position management function module, and the position management function module calculates the grid position to which the longitude and latitude of the satellite terminal belong according to the real-time position information and the ground grid information to obtain the grid position information.

[0080] Wherein, the ground grid information is input into the position management function module, and the position management function module calculates the grid position to which the latitude and longitude of the satellite terminal belong according to the real-time position information and the ground grid information to obtain the grid position information, and then further includes:

[0081] The real-time location information of the satellite terminal is updated in real time, and the grid location of the satellite terminal is updated according to the updated real-time location information to obtain the real-time updated grid location information.

[0082] The generating of a paging request according to user demand, querying the grid location information of the satellite terminal in the database according to the paging request, and selecting a target satellite in the satellite cluster according to the grid location information specifically includes:

[0083] Inputting the user's paging demand into the access management function module and outputting a paging request, wherein the paging request is generated by the access management function module according to the paging demand;

[0084] According to the paging request, querying the grid location information of the satellite terminal in the database, and inputting the grid location information into the constructed paging control function module;

[0085] Inputting the paging request into the paging control function module, the paging control function module confirming a target satellite in the satellite cluster according to the paging request and the grid location information, and outputting satellite information of the target satellite;

[0086] The target satellite represents the satellite currently passing by the satellite terminal.

[0087] The paging request is input into the paging control function module, the paging control function module confirms the target satellite in the satellite cluster according to the paging request and the grid location information, and outputs the satellite information of the target satellite, and then further includes:

[0088] An ephemeris management function module is constructed, the grid location information and the satellite information are input into the ephemeris management function module, and ephemeris data is output.

[0089] The extracting satellite information of the target satellite, generating a paging instruction according to the satellite information, sending the paging instruction to the target satellite, and receiving a paging operation result sent by the target satellite specifically includes:

[0090] Control the paging control function module to extract satellite information of the target satellite and generate a paging instruction according to the satellite information;

[0091] Transmitting the paging instruction to the access management function module, and sending the paging instruction to the target satellite through the access management function module;

[0092] According to the paging instruction, the target satellite is controlled to perform a paging operation, a paging operation result is generated, and the paging operation result is sent to the satellite terminal.

[0093] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a paging program based on satellite ephemeris and terminal position, and when the paging program based on satellite ephemeris and terminal position is executed by a processor, the steps of the paging method based on satellite ephemeris and terminal position as described above are implemented.

[0094] In summary, the present invention provides a paging method and related equipment based on satellite ephemeris and terminal position, the method comprising: obtaining the real-time position information of the satellite terminal sent by the satellite cluster, pre-processing the real-time position information, and storing it in a database; generating a paging request according to user needs, querying the current position information of the satellite terminal in the database according to the paging request, and screening out the target satellite in the satellite cluster according to the current position information; extracting the satellite information of the target satellite, generating a paging instruction according to the satellite information, and sending the paging instruction to the target satellite, and receiving the paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction. The present invention establishes a complete multi-dimensional data fusion mechanism by fusing terminal position information and satellite ephemeris data, including a unified data processing process integrating terminal position, mobile characteristics and ephemeris information, realizing adaptive grid division and dynamic boundary adjustment, realizing predictive paging strategy, significantly improving the paging success rate under the low-orbit satellite network, and reducing the waste of satellite resources.

[0095] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or core network including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or core network. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or core network including the element.

[0096] Of course, those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the program can be stored in a computer-readable storage medium that can be read by a computer, and the program can include the processes of the above-mentioned method embodiments when executed. The computer-readable storage medium can be a memory, a disk, an optical disk, etc.

[0097] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A paging method based on satellite ephemeris and terminal location, characterized in that: The paging method based on satellite ephemeris and terminal position includes: Acquire the real-time location information of the satellite terminal sent by the satellite cluster, pre-process the real-time location information to obtain grid location information, and store the grid location information in a database; Generate a paging request according to user demand, query the grid location information of the satellite terminal in the database according to the paging request, and select a target satellite in the satellite cluster according to the grid location information; Extract satellite information of the target satellite, generate a paging instruction according to the satellite information, send the paging instruction to the target satellite, and receive a paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

2. The paging method based on satellite ephemeris and terminal location according to claim 1, characterized in that: The acquiring real-time location information of the satellite terminal sent by the satellite cluster, preprocessing the real-time location information to obtain grid location information, and storing the grid location information in a database specifically includes: Constructing an access management function module and acquiring real-time location information of a satellite terminal, wherein the real-time location information is sent by the satellite cluster to the access management function module; Constructing a location management function module, and transmitting the real-time location information in the access management function module to the location management function module for preprocessing to obtain grid location information; The grid position information is stored in a connected database.

3. The paging method based on satellite ephemeris and terminal location according to claim 2, characterized in that: The step of constructing a location management function module and transmitting the real-time location information in the access management function module to the location management function module for preprocessing to obtain grid location information specifically includes: Constructing a location management function module, and transmitting the real-time location information in the access management function module to the location management function module; The ground grid information is input into the position management function module, and the position management function module calculates the grid position to which the longitude and latitude of the satellite terminal belong according to the real-time position information and the ground grid information to obtain the grid position information.

4. The paging method based on satellite ephemeris and terminal location according to claim 3, characterized in that: The ground grid information is input into the position management function module, and the position management function module calculates the grid position to which the latitude and longitude of the satellite terminal belong according to the real-time position information and the ground grid information to obtain the grid position information, and then further includes: The real-time location information of the satellite terminal is updated in real time, and the grid location of the satellite terminal is updated according to the updated real-time location information to obtain the real-time updated grid location information.

5. The paging method based on satellite ephemeris and terminal location according to claim 2, characterized in that: The generating of a paging request according to user demand, querying the grid location information of the satellite terminal in the database according to the paging request, and selecting a target satellite in the satellite cluster according to the grid location information specifically includes: Inputting the user's paging demand into the access management function module and outputting a paging request, wherein the paging request is generated by the access management function module according to the paging demand; According to the paging request, querying the grid location information of the satellite terminal in the database, and inputting the grid location information into the constructed paging control function module; Inputting the paging request into the paging control function module, the paging control function module confirming a target satellite in the satellite cluster according to the paging request and the grid location information, and outputting satellite information of the target satellite; The target satellite represents the satellite currently passing by the satellite terminal.

6. The paging method based on satellite ephemeris and terminal location according to claim 5, characterized in that: The paging request is input into the paging control function module, the paging control function module confirms the target satellite in the satellite cluster according to the paging request and the grid location information, and outputs the satellite information of the target satellite, and then further includes: An ephemeris management function module is constructed, the grid location information and the satellite information are input into the ephemeris management function module, and ephemeris data is output.

7. The paging method based on satellite ephemeris and terminal location according to claim 6, characterized in that: The extracting satellite information of the target satellite, generating a paging instruction according to the satellite information, sending the paging instruction to the target satellite, and receiving a paging operation result sent by the target satellite specifically includes: Control the paging control function module to extract satellite information of the target satellite and generate a paging instruction according to the satellite information; Transmitting the paging instruction to the access management function module, and sending the paging instruction to the target satellite through the access management function module; According to the paging instruction, the target satellite is controlled to perform a paging operation, a paging operation result is generated, and the paging operation result is sent to the satellite terminal.

8. A paging system based on satellite ephemeris and terminal location, characterized in that: The paging system based on satellite ephemeris and terminal position includes: An information preprocessing module is used to obtain the real-time location information of the satellite terminal sent by the satellite cluster, preprocess the real-time location information, and store it in a database; A target satellite screening module is used to generate a paging request according to user needs, query the current location information of the satellite terminal in the database according to the paging request, and screen the target satellite in the satellite cluster according to the current location information; A paging execution module is used to extract satellite information of the target satellite, generate a paging instruction according to the satellite information, send the paging instruction to the target satellite, and receive a paging operation result sent by the target satellite, wherein the paging operation result is generated by the target satellite according to the paging instruction.

9. A core network, characterized in that: The core network includes: a memory, a processor, and a paging program based on satellite ephemeris and terminal location stored in the memory and executable on the processor. When the paging program based on satellite ephemeris and terminal location is executed by the processor, the steps of the paging method based on satellite ephemeris and terminal location as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a paging program based on satellite ephemeris and terminal location, and when the paging program based on satellite ephemeris and terminal location is executed by a processor, the steps of the paging method based on satellite ephemeris and terminal location as described in any one of claims 1-7 are implemented.

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