CN116032344A

CN116032344A - Network element state management method and device, electronic equipment and storage medium

Info

Publication number: CN116032344A
Application number: CN202211430022.2A
Authority: CN
Inventors: 李元杰; 李贺武; 刘威; 刘李鑫; 陈怡梅; 吴茜; 刘君; 赖泽祺
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-04-28

Abstract

The invention provides a network element state management method, a device, electronic equipment and a storage medium, wherein the method comprises the following steps: decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the service area in the satellite network to be processed is coupled with the preset satellite; determining a mobile network location state of the satellite network to be processed based on the geographic location area; other states of the satellite network to be processed are managed to local user equipment to obtain a distributed local state library; based on the distributed local state library, running a state management flow of key signaling of the satellite network to be processed; based on the position state of the mobile network, the distributed local state library and the state management flow, a stateless heaven-earth fusion mobile network is obtained, wherein the stateless heaven-earth fusion mobile network is a network which is not subjected to state transition and consists of satellites and a ground network. The invention can avoid signaling storm.

Description

Network element state management method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of mobile communications networks, and in particular, to a method and apparatus for managing a network element state, an electronic device, and a storage medium.

Background

With advances in technology, mobile networks have been successful in serving billions of users. Deploying mobile networks to satellites alleviates the operating cost problem.

As known in the related art, the current mobile network is a highly stateful network. In order to provide carrier class services, a mobile network needs to conduct a session between a user equipment and the network infrastructure. As the user equipment moves, the mobile core network will migrate the state of the network infrastructure to the new infrastructure node, thereby providing continuous service for the user equipment. The operation of these states needs to be successful before the data service is provided, otherwise the data service is blocked.

However, a large number of state transitions can occur between highly mobile satellites, and even if the user equipment is not moving, the state transition problem remains serious. This will lead to signaling storms in the satellite network, thereby depleting the satellite hardware, blocking the ground stations, and extending user service.

Disclosure of Invention

The invention provides a network element state management method, a device, electronic equipment and a storage medium, which are used for solving the defect of signaling storm in a satellite network in the prior art, realizing stateless integrated mobile core network, further improving the performance of the mobile network and avoiding the occurrence of the signaling storm.

The invention provides a network element state management method, which comprises the following steps: decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area; determining a mobile network location state of the satellite network to be processed based on the geographic location area; the other states of the satellite network to be processed are hosted to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed; operating a state management flow of key signaling of the satellite network to be processed based on the distributed local state library; and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the mobile network position state, the distributed local state library and the state management flow, wherein the stateless heaven-earth fusion mobile network is a network which is not subjected to state transition and consists of the satellite and the ground network.

According to the network element state management method provided by the invention, the determining the mobile network position state of the satellite network to be processed based on the geographic position area specifically comprises the following steps: determining a target geographic location based on the geographic location area; taking the target geographic position embedded in the IP address of the user equipment as a target position state of the user equipment corresponding to the IP address of the user equipment; and determining the mobile network position state of the satellite network to be processed based on the target position state.

According to the network element state management method provided by the invention, after the mobile network position state of the satellite network to be processed is determined based on the target position state, the network element state management method further comprises the following steps: determining a logic position state of a block number corresponding to the service area in the satellite network to be processed and a state transfer process corresponding to the logic position state; deleting the logic position state and the state transfer process in the mobile network position state, and taking the mobile network position state with the logic position state deleted and the state transfer process as a final mobile network position state.

According to the network element state management method provided by the invention, the other states of the satellite network to be processed are managed to the local user equipment to obtain the distributed local state library, which comprises the following steps: creating a local state memory at each local user equipment, and tracking and storing other states of the satellite network to be processed based on the local state memory; and obtaining the distributed local state library based on the local state memory storing the other states.

According to the network element state management method provided by the invention, after the distributed local state library is obtained based on the local state memory storing the other states, the network element state management method further comprises: the other state is required during the service of the user device by the satellite and is retrieved from the local state memory of the local user device if the satellite obtains authorization to access the distributed local state library.

According to the network element state management method provided by the invention, the satellite acquires the other states by adopting the following modes: embedding the other states into the successful establishment message of the session control through channel associated signaling in the process of establishing the session control connection; and obtaining the other states from the establishment success message based on the received establishment success message.

According to the network element state management method provided by the invention, after the other states of the satellite network to be processed are managed to the local user equipment to obtain the distributed local state library, the network element state management method further comprises the following steps: and encrypting and protecting each distributed local state library by adopting a public key, and using attribute-based encryption controlled by a home network to allow the home network to formulate an access control strategy for resisting unauthorized state access or modification of other user equipment and/or other satellites, wherein the access control strategy is determined according to the user equipment and the satellites.

According to the network element state management method provided by the invention, the state management flow comprises a localized uplink session establishment flow, a localized downlink session establishment flow and a state management flow in mobility registration; the running the state management flow of the key signaling of the satellite network to be processed based on the distributed local state library specifically comprises the following steps: constructing and running the localized uplink session establishment procedure based on the distributed local state library, wherein the localized uplink session establishment procedure is used for transmitting a target state of the distributed local state library to a satellite serving the user equipment during session connection setting; based on the target position state, constructing and operating the localized downlink session establishment flow, removing a fixed anchor point gateway in the satellite network to be processed, and forwarding stateless data between satellites by adopting the user equipment IP address comprising the target geographic position; and constructing and running the mobility registration state management flow based on the distributed local state library and the target position state, wherein the mobility registration state management flow is used for eliminating re-registration caused by the satellite dynamic state, and carrying state copies of the distributed local state library in the switching confirmation information to other satellites based on the distributed local state library under the condition that the user equipment is switched to other satellites by the satellite so as to realize state transition.

According to the network element state management method provided by the invention, after the localized uplink session establishment flow is constructed and operated based on the distributed local state library, the network element state management method further comprises the following steps: under the condition that the home network authorizes the satellite to access the target state, decrypting the encrypted state of the distributed local state library based on a public key to acquire data information corresponding to the state; and in the case that the home network does not authorize the satellite to access the target state, rolling back to a preset standard program based on the home network.

According to the network element state management method provided by the invention, the stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed is obtained based on the mobile network position state, the distributed local state library and the state management flow, and the method specifically comprises the following steps: based on the mobile network position state, the distributed local state library and the state management flow, the home network of the satellite network to be processed is replaced by a target home network; the target hometown network is used as a hometown network common to the ground network and the satellite; and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the home network common to the ground network and the satellite.

The invention also provides a network element state management device, which comprises: the system comprises a first module, a second module and a third module, wherein the first module is used for decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area; a second module for determining a mobile network location status of the satellite network to be processed based on the geographic location area; the third module is used for hosting other states of the satellite network to be processed to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed; a fourth module, configured to run a state management flow of the key signaling of the satellite network to be processed based on the distributed local state library; and a fifth module, configured to obtain a stateless converged mobile network corresponding to the satellite network to be processed based on the mobile network location state, the distributed local state library, and the state management flow, where the stateless converged mobile network is a network that is formed by the satellite and the ground network and has no state transition.

The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, the processor implementing the network element state management method as described in any one of the above when executing the program.

The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a network element state management method as described in any of the above.

The invention also provides a computer program product comprising a computer program which when executed by a processor implements a network element state management method as described in any one of the above.

According to the network element state management method, the network element state management device, the electronic equipment and the storage medium, the service area in the satellite network to be processed is decoupled from the preset satellite, and the service area is defined as the geographic position area, so that state migration can be effectively reduced. And other states of the satellite network to be processed are managed to the local user equipment to obtain a distributed local state library, and then the stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed can be obtained based on the mobile network position state, the distributed local state library and the state management flow, so that the stateless heaven-earth integrated mobile core network is realized, the performance of the mobile network can be improved, and signaling storm is avoided.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow chart of a network element state management method provided by the present invention;

FIG. 2 is a schematic flow chart of determining the mobile network location status of a satellite network to be processed based on a geographic location area provided by the present invention;

FIG. 3 is a schematic flow chart of a state management flow of key signaling for running a satellite network to be processed based on a distributed local state library provided by the invention;

FIG. 4 is a schematic flow chart of a stateless converged mobile network corresponding to a satellite network to be processed based on a mobile network location state, a distributed local state library and a state management flow provided by the invention;

fig. 5 is a schematic structural diagram of an IP address of a user equipment according to the present invention;

FIG. 6 is a schematic diagram of a stateless converged mobile network in accordance with the present invention;

FIG. 7 is a diagram of a second embodiment of a stateless converged mobile network;

FIG. 8 is a schematic diagram of a state transition flow of an initial registration process provided by the present invention;

FIG. 9 is a schematic diagram of a state transition flow of the call back establishment procedure provided by the present invention;

FIG. 10 is a schematic diagram of a state transition flow of a handover procedure according to the present invention;

FIG. 11 is a schematic diagram of a state transition flow of a state update process according to the present invention;

fig. 12 is a schematic structural diagram of a network element status management device provided by the present invention;

fig. 13 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The related art has recognized that there are problems with deploying mobile core networks to satellites. Unlike fixed ground infrastructure, LEO satellites move rapidly around the globe in unreliable, untrusted outer space. If the mobile core network is placed on an LEO satellite, the mobile core network will suffer from signaling storms, repeated mobile registration of a large number of static subscribers, service interruption caused by satellite failure, and sensitive state leakage (e.g., security keys) caused by the satellite being attacked. These problems become more serious as the number of satellites and subscribers to each satellite service increases.

The root cause of the above problem is a stateful mobile core network. In order to provide carrier class services, a mobile network needs to conduct a session between a User Equipment (UE) and an infrastructure with traffic delivery, mobility, qoS, charging and security states. As the user equipment moves, the core network migrates these states to the new infrastructure node to continue providing services. These status operations must succeed before the data traffic is provided, otherwise the data traffic will be blocked. While this approach is feasible for a fixed ground infrastructure, the design can result in a large number of static user equipment states migrating between satellites. Moreover, these conditions are susceptible to satellite failure, which is not uncommon in harsh space environments. Furthermore, stateful on-satellite core networks are inevitably exposed to other national locations and are therefore compromised by attacks and sensitive state leaks (e.g., security keys).

In order to solve the above problems, the present invention proposes a state management mechanism (corresponding to a state management method of a network element) of a converged mobile network, which decouples a state from a core network function based on a state management mechanism of a geographic location, simplifies a positioning state by addressing the geographic location, reduces state migration between satellites by adopting a geographic location service area and using user equipment as a repository localization state, and improves performance and scalability of the network. And the control of the home network on the state is supported, the state cannot be tampered by malicious users and satellites, and the safety of the state is ensured.

Fig. 1 is a schematic flow chart of a network element state management method provided by the present invention.

In order to further describe the network element state management method provided by the present invention, the following description will be made with reference to fig. 1.

In an exemplary embodiment of the present invention, as can be seen in fig. 1, the network element state management method may include steps 110 to 150, and each step will be described below.

In step 110, a service area in the satellite network to be processed is decoupled from a preset satellite, and the service area is defined as a geographical location area, wherein the geographical location area is an area obtained by dividing blocks based on geographical locations. The service area in the satellite network to be processed is coupled with a preset satellite, the satellite network to be processed is a network constructed by the satellite and a ground network, and the service area comprises a base station cell and a tracking area.

In one embodiment, the satellite network to be processed may be understood as a conventional satellite network. Wherein the logical service areas (including tracking areas and base station cells) in a conventional satellite network are bound to low-orbit satellites, i.e. coupled to pre-set satellites. The preset satellite may be determined according to actual situations, which is not specifically limited in this embodiment.

In one embodiment, continuing with the description of the embodiments described above, the logical service areas in conventional satellite network designs may be decoupled from the low-orbit satellites, and instead a geographic location service area (corresponding to the geographic location area) may be employed such that the geographic location service area remains stable in the high dynamics of the satellites. In the application process, the original logical area identification, such as the block ID, the tracking area ID, etc., can be discarded, and the block division can be used to track the location of the user equipment.

In yet another embodiment, the geographic location area is an area that is partitioned based on geographic location. In an example, a variety of geographic location block partitioning approaches may be supported, including but not limited to, partitioning based on latitude and longitude, google S2, uber H3, and based on satellite orbit parameters.

In yet another example, the partitioned block needs to meet the following condition: full coverage of the earth's surface or of the operator's planned service area; there is no overlap between blocks, i.e. one ue can only have one block number at a time.

In yet another embodiment, during the partitioning of the tiles, the earth may be projected onto a plane first as S2, H3, and then the plane is padded with the same shape, such as a square of S2 and a regular hexagon of H3; or directly dividing the spherical surface of the earth into non-overlapping blocks according to longitude and latitude blocks or the dividing mode giving orbit parameters.

In step 120, a mobile network location status of the satellite network to be processed is determined based on the geographic location area.

In one embodiment, the mobile network location status of the satellite network to be processed may be determined based on the geographic location area to enable simplification of the mobile network location status, eliminating unnecessary status management and migration.

Fig. 2 is a schematic flow chart of determining a mobile network location state of a satellite network to be processed based on a geographic location area according to the present invention.

To further describe the process of determining the mobile network location status of the pending satellite network based on the geographic location area, a description will be provided below in connection with fig. 2.

In an exemplary embodiment of the present invention, as can be seen in connection with fig. 2, determining the mobile network location status of the satellite network to be processed based on the geographical location area may include steps 210 to 230, which will be described separately below.

In step 210, a target geographic location is determined based on the geographic location area.

In step 220, the target geographic location embedded in the IP address of the user equipment is used as the target location status of the user equipment corresponding to the IP address of the user equipment.

In step 230, a mobile network location state of the satellite network to be processed is determined based on the target location state.

In one embodiment, a target geographic location of the user device may be determined based on the geographic location area. And then the embedded geographic position (corresponding to the target geographic position) in the IP address of the user equipment is used as the position state of the equipment. In the application process, the satellite directly acquires the position state of the user equipment from the IP address of the user equipment. In yet another example, when the satellite needs the location state of the user device, such as session establishment, inter-satellite handoff, etc., the satellite may read the location state of the user device directly from the IP address, which may reduce the transmission of signaling.

In yet another embodiment, the user equipment IP address may be improved. Based on the addressing of the geographic location, the geographic location is embedded into the user device IP address.

Fig. 5 is a schematic structural diagram of an IP address of a user equipment according to the present invention.

As can be seen from fig. 5, the IP address of the user equipment includes an operator ID, a geographical location of the home network, a geographical location of a block where the user is located, and a unique identifier in one block. It should be noted that, for the IP address of the user equipment in the present invention, it is only required to satisfy that the geographic location information is embedded in the IP address.

In order to further describe the network element state management method provided by the present invention, the following description will be given with reference to the following embodiments.

In an exemplary embodiment of the present invention, continuing with the embodiment illustrated in fig. 2, after determining the mobile network location status of the satellite network to be processed (corresponding to step 230) based on the target location status, the network element status management method may further include the steps of:

determining a logic position state of a block number corresponding to a service area in a satellite network to be processed and a state transfer process corresponding to the logic position state;

deleting the logic position state and the state transfer process in the mobile network position state, and taking the mobile network position state of which the logic position state and the state transfer process are deleted as a final mobile network position state.

In one embodiment, logical location states such as block numbers and associated state transfer procedures may be deleted from the mobile network location state. In an example, tile ID and tracking area ID status in a mobile network may be removed. And changing the corresponding state migration flow, and in the session establishment and mobility registration process, the geographic position state is not explicitly transferred any more. By the embodiment, unnecessary network element states can be simplified, and state transition signaling cost is reduced.

In step 130, other states of the satellite network to be processed are managed to the local user equipment to obtain a distributed local state library, wherein the other states are states of the satellite network to be processed except the mobile network position state. The obtained distributed local state library is the distributed state repository in fig. 6.

In one embodiment, other states of the satellite core network may be hosted to local user devices, forming a distributed geospatial local state library. In the application process, any authorized stateless satellite entering the service area can use the local state in the distributed local state library to serve the user equipment, so that the number of signaling migration can be effectively reduced, and signaling storm is avoided.

In step 140, a state management flow of critical signaling of the satellite network to be processed is run based on the distributed local state library.

In one embodiment, the state management flow of critical signaling for the satellite network to be processed may be determined based on a distributed local state library. In this embodiment, the state management flow of the core key signaling of the conventional mobile network can be simplified by using the local state in the distributed local state library, so as to improve the performance and expandability of the network in the process.

In step 150, a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed is obtained based on the mobile network position state, the distributed local state library and the state management flow, wherein the stateless heaven-earth fusion mobile network is a network composed of satellites and a ground network without state transition. Fig. 6 and fig. 7 are schematic structural diagrams and detailed structural diagrams respectively showing a stateless heaven-earth fusion mobile network provided by the invention.

In one embodiment, a stateless heaven-earth fusion mobile network corresponding to a satellite network to be processed can be obtained according to the mobile network position state, the distributed local state library and the state management flow, so as to realize seamless fusion of the satellite and the traditional ground 5G mobile network. The stateless world convergence mobile network is a network composed of satellite and terrestrial networks that has not undergone state transition. By the embodiment, the stateless integrated mobile core network is realized, so that the performance of the mobile network can be improved, and signaling storm is avoided.

According to the network element state management method provided by the invention, the service area in the satellite network to be processed is decoupled from the preset satellite, and the service area is defined as the geographic position area, so that state transition can be effectively reduced. And other states of the satellite network to be processed are managed to the local user equipment to obtain a distributed local state library, and then the stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed can be obtained based on the mobile network position state, the distributed local state library and the state management flow, so that the stateless heaven-earth integrated mobile core network is realized, the performance of the mobile network can be improved, and signaling storm is avoided.

To further describe the process of hosting other states of the satellite network to be processed to the local user device to obtain a distributed local state library in the present invention, the following embodiments will be described.

In an exemplary embodiment of the present invention, hosting other states of the satellite network to be processed to the local user device, obtaining a distributed local state library may include the steps of:

creating a local state memory at each local user equipment, and tracking and storing other states of the satellite network to be processed based on the local state memory;

based on the local state memory storing other states, a distributed local state library is obtained.

In one embodiment, a system application running a local state agent may be created in the commodity user device, i.e., a distributed local state library is obtained through a local state memory created at the local user device. In the application process, the proxy stores the user equipment status from the home network at the initial registration. In the subsequent signaling process, the repository updates the status as required.

In order to further describe the process of hosting other states of the satellite network to be processed to the local user equipment to obtain the distributed local state library provided by the present invention, the following description will be made with reference to the following embodiments.

In still another exemplary embodiment of the present invention, continuing with the foregoing description of the embodiment, after obtaining the distributed local state library based on the local state memory storing other states, the network element state management method may further include the steps of:

other states are required during the satellite service of the user device and are retrieved from the local state memory of the local user device in case the satellite obtains authorization to access the distributed local state library.

In one embodiment, when the satellite needs the state of the served user, if authorized, the state of the user (corresponding to other states) may be obtained from the local state memory of the local user device, so as to reduce state migration between the satellite and the home network.

Taking handover as an example, when a user switches satellites, a new satellite acquires the encrypted user equipment state from a handover confirmation message returned by the user equipment. If the satellite has authorization to read the state, the satellite runs a decryption program to decrypt the state. Further, the satellite may use this state to provide data services to the user.

In yet another exemplary embodiment of the present invention, continuing with the previous embodiment, the satellite may acquire other states in the following manner:

In the process of establishing the session control connection, other states are embedded into the successful message of establishing the session control through the channel associated signaling;

based on the received setup success message, other states are derived from the setup success message.

In one embodiment, the mechanism for the channel associated signaling transport state may be based on concurrent signaling interactions. Specifically, the state of the user is embedded in its Radio Resource Control (RRC) setup success signaling message through the associated signaling while the session control connection is established. When the satellite receives the RRC setup success message, the user state (corresponding to the other state) may be read directly from the message.

In an exemplary embodiment of the present invention, continuing to describe the embodiment described in connection with fig. 1, after hosting other states of the satellite network to be processed to the local user equipment to obtain the distributed local state library (corresponding to step 130), the network element state management method may further include the following steps:

and encrypting and protecting each distributed local state library by adopting a public key, and using attribute-based encryption controlled by the home network to allow the home network to formulate an access control strategy for resisting unauthorized state access or modification of other user equipment and/or other satellites, wherein the access control strategy is determined according to the user equipment and the satellites.

In one embodiment, only the home network has the right to modify and update other states (except for the geographical location state). The public key encryption is adopted to carry out local security and state protection on each distributed local state library, and attribute-based encryption controlled by the home network is used to allow the home network to assign access control strategies according to equipment and satellite attributes, so that unauthorized state access or modification of equipment/satellites is resisted, and the security of other states placed on user equipment is improved.

In yet another embodiment, the home network may receive a dynamic data usage report of a remote satellite, and the home network's core network control plane (as shown in fig. 6) operates its policy control function and updates the session state to and serving the local user equipment using a session modification procedure. In one example, qos and billing information for the user device is stored in the home network and data usage reports for the user device and satellite transmissions are received, which in one example may be stored in the PCF in fig. 7. When a change in the state of the tower is required (e.g., the data usage exceeds a certain limit, a change rate upper limit is required), the home network sends a state update command to the user device and the served satellites. After the user equipment and the service satellite are authenticated as commands of the home network for updating the state, a state updating program is operated to update the current state and the state of a state memory (corresponding to a local state memory) of the user equipment.

In yet another embodiment, if the user equipment moves to a new geospatial element, it will inform the home network of its new location. In an example, the user equipment may update its location information according to the location system of the device, and if the location block is crossed, the location information changes, and the user equipment will notify the home network to update the location information, which in an example may be implemented by the AMF in fig. 7. The home network will reassign the location IP address through the PSA and the current location. The user equipment updates its IP and establishes a new session.

In yet another embodiment, the user equipment or satellite is prohibited from updating other states in addition to the location state, i.e. other states can only be updated by the home network. It uses public key encryption for state protection and uses home network controlled attribute-based encryption.

In one example, at initialization, the home network prepares a key pair (pk, msk), generates a key for an authorized satellite based on its set of attributes, and installs it to the satellite (prior to transmission to space) and to the user device (in the SIM card). For the first registration, the user equipment and the home network follow a standard procedure to perform mutual authentication. In this process, the home network encrypts the user equipment state using its private key pk and access tree a. A is specific to this user equipment and defines the access control policy of the satellite. For subsequent services, the user equipment and its service satellites run a local authentication and key agreement by verifying its status/credentials, where this step can be performed by the AUSF in fig. 7 _local The security verification function in the figure is completed. Allowing home networks to assign access control policies based on user equipment and satellite attributes to combat local user equipment/satellite unauthorizedState access or modification of (a).

Fig. 3 is a flow chart of a state management flow of key signaling for running a satellite network to be processed based on a distributed local state library provided by the invention.

The process of determining the state management flow of critical signaling of the satellite network to be processed based on the distributed local state library will be described with reference to fig. 3.

In an exemplary embodiment of the present invention, the state management flow may include a localized uplink session establishment flow, a localized downlink session establishment flow, and a state management flow in mobility registration. As can be seen in conjunction with fig. 3, the state management process for running the critical signaling of the satellite network to be processed may include steps 310 to 330 based on the distributed local state library, and each step will be described separately below.

In step 310, a localized upstream session establishment procedure is constructed and run based on the distributed local state library, wherein the localized upstream session establishment procedure is used to communicate the target state of the distributed local state library to satellites serving the user equipment during session connection setup.

In still another exemplary embodiment of the present invention, continuing to refer to fig. 3 as an example, after step 310, the network element state management method may further include:

under the condition that the home network authorizes the satellite to access the target state, decrypting the state of the encrypted distributed local state library based on the public key to acquire data information corresponding to the state;

in case the home network does not authorize the satellite to access the target state, the home network rolls back to a preset standard procedure.

In one embodiment, a localized upstream session establishment procedure may be constructed and run based on a distributed local state library, with localized session establishment utilizing state copies of the user device. In one example, the user equipment propagates its state along-path to the LEO satellite serving it during session connection setup. If the home network grants access to the state, the serving satellite may successfully decrypt and install it onto the satellite to immediately provide the data service. Wherein the foregoing process may be accomplished by the state agent shown in fig. 7.

Otherwise, if the service satellite cannot decrypt the states, the home network rolls back to the standard procedure by contacting the home network, as shown in fig. 7, and the home network implements 5G standard functions such as AUSF (authentication service function), UDM (unified data management), AMF (access and mobility management function), SMF (session management function), PCF (policy control function), and the like of the 5G standard.

In step 320, a localized downlink session establishment procedure is constructed and operated based on the target location status, and the fixed anchor gateway in the satellite network to be processed is removed, and stateless data forwarding is performed between satellites by using the IP address of the user equipment including the target geographic location, i.e. the stateless core data plane of the satellite in fig. 6, specifically, forwarding may be performed by the UPF of the stateless satellite network in fig. 7.

In one embodiment, a localized downstream session establishment procedure may be constructed and run based on the target location state, removing the fixed anchor gateway, and employing geographic location based IP addresses for stateless data forwarding between satellites. Wherein, removing the fixed anchor gateway can alleviate a single point bottleneck in the network.

In the application process, the stateless data forwarding is carried out between satellites by adopting the IP address based on the geographic position, and each satellite can estimate the physical distance between the satellite and the destination and determine the next-hop satellite by comparing the address of the destination user equipment and the current running position of the satellite, so that the forwarding path is determined, and the stateless data forwarding is realized.

In step 330, a state management flow in mobility registration is constructed and operated based on the distributed local state library and the target location state, where the state management flow in mobility registration is used to eliminate re-registration caused by satellite dynamics, and in case that the user equipment is switched from a satellite to another satellite, based on the distributed local state library, state copies of the distributed local state library are carried in the switching acknowledgement information to the other satellite, so as to implement state transition.

In one embodiment, a mobility in-registration state management flow may be constructed and run based on a distributed local state library and target location state to eliminate re-registration due to satellite high dynamics. In the application process, for the switching caused by the high dynamic state of the satellite, the local state library of the user equipment is utilized to realize faster state transition.

In one example, the geospatial service area is decoupled from the satellite. The service area of the static user equipment remains unchanged regardless of its service satellite, thus eliminating the update of the orbit area due to the satellite movement and avoiding a lot of signalling migration. For inter-satellite handoff, the user equipment hands off from one satellite to another. The new satellite should install the user equipment status to maintain a seamless continuous data service. Upon switching to the new satellite, the user device will piggyback its state copy in a switch acknowledge message to the new satellite. This results in an equivalent but shorter state transition path.

In order to further describe the network element state management method provided by the present invention, the following describes the optimization procedure of the session establishment, mobility registration signaling procedure in the present invention with reference to the signaling procedure diagrams shown in fig. 8 to 11.

In one embodiment, the session establishment procedure may include: initial registration, uplink session establishment, and downlink session establishment, each of which will be described below.

Initial registration:

in one embodiment, as can be seen in connection with fig. 8, each user device follows the standard procedures of a mobile network for authentication, security key agreement, state creation and session setup of a remote terrestrial home. In this process, the home network fully controls data forwarding, qoS, charging, and security of each user equipment by generating session states according to these policies. After successful registration, the home network allocates the geospatial IP address to the user device, encrypts these states according to its satellite access control policy, and hosts them to the local user device, which forwards them through the GTP-U tunnel.

And (3) establishing an uplink session:

in one embodiment, as can be seen in connection with fig. 9, this procedure is invoked when the user device wants to send data but has no active session connection with its serving satellite. The present invention localizes session establishment using state copies of user devices. The user equipment follows its state copy to the LEO satellite serving it during session connection setup, which can be achieved by reusing the AT commands of the user equipment. If the home grants access to these states, the service satellite can successfully decrypt and install it into its local radio access and UPF functions to immediately provide data services, enabling state, function, location decoupling. Otherwise, the service satellite cannot decrypt the states and roll back to standard procedures by contacting the home network.

And (3) establishing a downlink session:

in one embodiment, as can be seen in connection with fig. 9, this process occurs when the user device should receive its data but has no active session connection with the satellite. The invention pushes the data service to the satellite edge and deletes the mobile anchor gateway. In contrast, the present invention employs geospatial units for stateless data forwarding between satellites. By comparing the address of the destination user device with the run-time location, each satellite can estimate its physical distance from the destination and determine the next hop satellite.

In yet another embodiment, the mobility registration procedure may include: the steps of switching caused by satellite high dynamic state, eliminating mobility registration, switching/mobility registration caused by user equipment mobility and the like are respectively described below.

Satellite high dynamic induced handoff:

in one embodiment, a static user equipment with an active session connection may face two types of handovers: (1) Beam switching, i.e. the switching of a user equipment from one antenna to another antenna from the same satellite. This occurs at the physical layer without core state operation; (2) Inter-satellite handoff, in which the user equipment hands off from one satellite to another. As shown in fig. 10, the new satellite should install the user equipment status to maintain a seamless continuous data service. In the present invention, upon handover to a new satellite, the user equipment piggybacks its state copy in a handover confirm message to the new satellite. This results in an equivalent but shorter state transition path.

Eliminating mobility registration:

unlike conventional stateful designs, the present invention eliminates the orbit area update due to moving satellites because it decouples the geospatial service area from the satellites. The service area of the static user equipment remains unchanged, and therefore is not updated, regardless of its service satellite. In this way, the present invention avoids a significant amount of state transitions.

User equipment mobility induced handover/mobility registration:

it should be noted that both occur only when the user device passes through the geospatial cell. In this case, the user equipment should update its location to the remote home network. The process follows standard procedures to re-authenticate the user device, re-assign its geospatial IP address, and possibly in accordance with the policy of the new location (update QoS/billing status.

In yet another embodiment, the present invention may also support control and update of status by the home network, steps of which will be described below in connection with fig. 11.

The home network receives dynamic data usage reports of remote satellites, operates its policy control function, and updates session states to the local user equipment and the serving satellite using session modification procedures. If the user equipment moves to a new geospatial element, it will inform the home network of its new location.

At the same time, to reduce sensitive security state leakage, the present invention hosts most authentication and critical protocols to local user devices and edge satellites. The present invention employs public key encryption for local state protection and uses attribute-based encryption (ABE) of the home network. It allows the home to specify access control policies based on user device and satellite attributes, thus protecting against unauthorized state access or modification of the local user device/satellite.

Fig. 4 is a schematic flow chart of obtaining a stateless heaven-earth fusion mobile network corresponding to a satellite network to be processed based on a mobile network position state, a distributed local state library and a state management flow.

The network element state management method provided by the invention will be described with reference to fig. 4.

In an exemplary embodiment of the present invention, as can be seen in conjunction with fig. 4, obtaining a stateless converged mobile network corresponding to a satellite network to be processed based on a mobile network location state, a distributed local state library and a state management flow may include steps 410 to 430, and each step will be described below.

In step 410, the home network of the satellite network to be processed is replaced with the target home network based on the mobile network location status, the distributed local status library, and the status management procedure.

In step 420, the target home network is taken as the home network common to the terrestrial network and the satellite.

In step 430, a stateless converged mobile network corresponding to the satellite network to be processed is obtained based on the home network common to the terrestrial network and the satellite.

In one embodiment, the home network of the satellite network to be processed may be replaced with a target home network, i.e., the terrestrial mobile core as its home network, based on the mobile network location status, the distributed local status library, and the status management flow. Since the state management flow is based on standard 5G core network functions and signaling procedures, it is backward compatible with the legacy terrestrial 5G, and in fig. 7, the ue retains the standard 5G protocol stack, and the ue is backward compatible. Further, the ground home core network can be commonly accessed by the satellite and the ground 5G base station, so that the space-ground network is fused.

In yet another embodiment, an operator's existing ground mobile core network may be connected to the satellite ground station, its IP address allocation policy updated to geographic location based IP, and support for policy-based user equipment state encryption added. In an example, the initial registration and session setup does not involve interactions between the satellite and the terrestrial 5G. For mobility registration between space and terrestrial infrastructure, satellites and terrestrial base stations will be coordinated by the terrestrial home. When the user equipment has no active connection with the infrastructure (i.e. idle state), it will run standard block reselection to switch its connection between the space and ground base stations. Otherwise (i.e., connection state), the handoff from the space to the terrestrial base station (and vice versa) follows the standard 5G handoff of home network control.

The invention supports seamless fusion with a terrestrial 5G network. This is because the present invention builds on standard 5G core network functions and signaling procedures and is therefore backwards compatible with legacy terrestrial 5G. And secondly, the ground home core network of the invention can be accessed by satellites and ground 5G base stations, thereby promoting space-ground network fusion.

In yet another embodiment, the converged terrestrial network and satellite core network may further comprise the steps of:

the operator connects the existing ground mobile core with the satellite ground station, updates its IP address allocation policy to geospatial unit based satellite user equipment, and adds support for policy based user equipment state encryption.

For mobility registration between space and terrestrial infrastructure, the present invention first integrates the terrestrial home core network into the terrestrial 5G infrastructure structure. This integration is easy to implement because the floor hometown of the present invention follows the traditional 5G.

When the user equipment has no active connection with the infrastructure (i.e. idle state), it will run standard block reselection to switch its association between the spatial and terrestrial base stations. Otherwise (i.e. connection state), note that the home (core) network of the present invention is a natural controller for both space and ground nodes. The handoff from space to ground base station (and vice versa) follows a standard 5G handoff.

The network element state management method provided by the invention is beneficial to all signaling processes related to signaling migration, such as session establishment, registration, switching and the like of the mobile network by decoupling the functions from the positions, supports the update state of the home network, and supports the seamless integration of satellites and the traditional ground mobile network.

According to the above description, the network element state management method provided by the invention can effectively reduce state migration by decoupling the service area in the satellite network to be processed from the preset satellite and defining the service area as a geographical location area. And other states of the satellite network to be processed are managed to the local user equipment to obtain a distributed local state library, and then the stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed can be obtained based on the mobile network position state, the distributed local state library and the state management flow, so that the stateless heaven-earth integrated mobile core network is realized, the performance of the mobile network can be improved, and signaling storm is avoided.

Based on the same conception, the invention also provides a network element state management device.

The network element state management device provided by the invention is described below, and the network element state management device described below and the network element state management method described above can be referred to correspondingly.

Fig. 12 is a schematic structural diagram of a network element status management device provided by the present invention.

In an exemplary embodiment of the present invention, as can be seen in connection with fig. 12, the network element status management device may include a first module 1210 to a fifth module 1250, and each module will be described below.

The first module 1210 may be configured to decouple a service area in a satellite network to be processed from a preset satellite, and define a service trace area as a geographic location area, where the geographic location area is an area obtained by performing block division based on a geographic location, the service area in the satellite network to be processed is coupled to the preset satellite, the satellite network to be processed is a network constructed by a satellite and a ground network, and the service area includes a base station cell and a tracking area;

a second module 1220 that may be configured to determine a mobile network location status of the satellite network to be processed based on the geographic location area;

a third module 1230 may be configured to host other states of the satellite network to be processed to the local user device, resulting in a distributed local state library, where the other states are states of the satellite network to be processed other than the mobile network location state;

a fourth module 1240 that may be configured to run a state management flow for critical signaling of the satellite network to be processed based on the distributed local state library;

The fifth module 1250 may be configured to obtain a stateless converged mobile network corresponding to the satellite network to be processed based on the mobile network location state, the distributed local state library, and the state management flow, wherein the stateless converged mobile network is a network composed of satellites and a terrestrial network without state transition.

In an exemplary embodiment of the present invention, the second module 1220 may determine the mobile network location status of the pending satellite network based on the geographic location area in the following manner:

determining a target geographic location based on the geographic location area;

taking the target geographic position embedded in the IP address of the user equipment as the target position state of the user equipment corresponding to the IP address of the user equipment;

based on the target location state, a mobile network location state of the satellite network to be processed is determined.

In an exemplary embodiment of the present invention, the second module 1220 may be further configured to:

In an exemplary embodiment of the present invention, the third module 1230 may host other states of the satellite network to be processed to the local user device in the following manner, resulting in a distributed local state library:

In an exemplary embodiment of the present invention, the third module 1230 may be further configured to:

In an exemplary embodiment of the present invention, the third module 1230 may also implement satellite acquisition of other states in the following manner:

In an exemplary embodiment of the present invention, the state management flow may include a localized uplink session establishment flow, a localized downlink session establishment flow, and a state management flow in mobility registration;

the fourth module 1240 may operate a state management flow of critical signaling of the satellite network to be processed based on the distributed local state library in the following manner:

constructing and running a localized uplink session establishment procedure based on the distributed local state library, wherein the localized uplink session establishment procedure is used for transmitting a target state of the distributed local state library to a satellite serving the user equipment during session connection setting;

constructing and running a localized downlink session establishment flow based on the target position state, removing a fixed anchor point gateway in a satellite network to be processed, and forwarding stateless data between satellites by adopting a user equipment IP address comprising a target geographic position;

And constructing and running a state management flow in mobility registration based on the distributed local state library and the target position state, wherein the state management flow in mobility registration is used for eliminating re-registration caused by satellite dynamics, and carrying state copies of the distributed local state library in the switching confirmation information to other satellites based on the distributed local state library under the condition that the user equipment is switched to other satellites from the satellites so as to realize state transition.

In an exemplary embodiment of the present invention, the fourth module 1240 may be further configured to:

In an exemplary embodiment of the present invention, the fifth module 1250 may obtain a stateless converged mobile network corresponding to the satellite network to be processed based on the mobile network location state, the distributed local state library, and the state management flow in the following manner:

Based on the position state of the mobile network, the distributed local state library and the state management flow, the home network of the satellite network to be processed is replaced by a target home network;

the target hometown network is used as a hometown network common to the ground network and the satellite;

based on the common home network of the ground network and the satellite, a stateless converged mobile network corresponding to the satellite network to be processed is obtained.

Fig. 13 illustrates a physical structure diagram of an electronic device, as shown in fig. 13, which may include: processor 1310, communication interface (Communications Interface) 1320, memory 1330 and communication bus 1340, wherein processor 1310, communication interface 1320, memory 1330 communicate with each other via communication bus 1340. Processor 1310 may invoke logic instructions in memory 1330 to perform a network element state management method, the method comprising: decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area; determining a mobile network location state of the satellite network to be processed based on the geographic location area; the other states of the satellite network to be processed are hosted to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed; operating a state management flow of key signaling of the satellite network to be processed based on the distributed local state library; and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the mobile network position state, the distributed local state library and the state management flow, wherein the stateless heaven-earth fusion mobile network is a network which is not subjected to state transition and consists of the satellite and the ground network.

Further, the logic instructions in the memory 1330 can be implemented in the form of software functional units and can be stored in a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program, where the computer program can be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer can execute a network element state management method provided by the above methods, and the method includes: decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area; determining a mobile network location state of the satellite network to be processed based on the geographic location area; the other states of the satellite network to be processed are hosted to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed; operating a state management flow of key signaling of the satellite network to be processed based on the distributed local state library; and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the mobile network position state, the distributed local state library and the state management flow, wherein the stateless heaven-earth fusion mobile network is a network which is not subjected to state transition and consists of the satellite and the ground network.

In yet another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform a network element state management method provided by the above methods, the method comprising: decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area; determining a mobile network location state of the satellite network to be processed based on the geographic location area; the other states of the satellite network to be processed are hosted to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed; operating a state management flow of key signaling of the satellite network to be processed based on the distributed local state library; and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the mobile network position state, the distributed local state library and the state management flow, wherein the stateless heaven-earth fusion mobile network is a network which is not subjected to state transition and consists of the satellite and the ground network.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, 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 understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

It will further be appreciated that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A network element state management method, characterized in that the network element state management method comprises:

decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area;

Determining a mobile network location state of the satellite network to be processed based on the geographic location area;

the other states of the satellite network to be processed are hosted to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed;

operating a state management flow of key signaling of the satellite network to be processed based on the distributed local state library;

and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the mobile network position state, the distributed local state library and the state management flow, wherein the stateless heaven-earth fusion mobile network is a network which is not subjected to state transition and consists of the satellite and the ground network.

2. The network element state management method according to claim 1, wherein the determining the mobile network location state of the satellite network to be processed based on the geographical location area specifically comprises:

determining a target geographic location based on the geographic location area;

taking the target geographic position embedded in the IP address of the user equipment as a target position state of the user equipment corresponding to the IP address of the user equipment;

And determining the mobile network position state of the satellite network to be processed based on the target position state.

3. The network element state management method according to claim 2, wherein after the determining of the mobile network position state of the satellite network to be processed based on the target position state, the network element state management method further comprises:

determining a logic position state of a block number corresponding to the service area in the satellite network to be processed and a state transfer process corresponding to the logic position state;

deleting the logic position state and the state transfer process in the mobile network position state, and taking the mobile network position state with the logic position state deleted and the state transfer process as a final mobile network position state.

4. The network element state management method according to claim 1, wherein the hosting the other states of the satellite network to be processed to a local user equipment to obtain a distributed local state library specifically includes:

And obtaining the distributed local state library based on the local state memory storing the other states.

5. The network element state management method according to claim 4, wherein after the obtaining the distributed local state library based on the local state memory storing the other states, the network element state management method further comprises:

the other state is required during the satellite service user device and is retrieved from the local state memory of the local user device in case the satellite obtains authorization to access the distributed local state library.

6. The network element state management method according to claim 5, wherein the satellite acquires the other states by:

embedding the other states into the successful establishment message of the session control through channel associated signaling in the process of establishing the session control connection;

and obtaining the other states from the establishment success message based on the received establishment success message.

7. The network element state management method according to claim 1, wherein after said hosting the other states of the satellite network to be processed to a local user device to obtain a distributed local state library, the network element state management method further comprises:

And encrypting and protecting each distributed local state library by adopting a public key, and using attribute-based encryption controlled by a home network to allow the home network to formulate an access control strategy for resisting unauthorized state access or modification of other user equipment and/or other satellites, wherein the access control strategy is determined according to the user equipment and the satellites.

8. The network element state management method according to claim 2, wherein the state management flow includes a localized uplink session establishment flow, a localized downlink session establishment flow, and a mobility registration state management flow;

the running the state management flow of the key signaling of the satellite network to be processed based on the distributed local state library specifically comprises the following steps:

constructing and running the localized uplink session establishment procedure based on the distributed local state library, wherein the localized uplink session establishment procedure is used for transmitting a target state of the distributed local state library to a satellite serving the user equipment during session connection setting;

based on the target position state, constructing and operating the localized downlink session establishment flow, removing a fixed anchor point gateway in the satellite network to be processed, and forwarding stateless data between satellites by adopting the user equipment IP address comprising the target geographic position;

And constructing and running the mobility registration state management flow based on the distributed local state library and the target position state, wherein the mobility registration state management flow is used for eliminating re-registration caused by the satellite dynamic state, and carrying state copies of the distributed local state library in the switching confirmation information to other satellites based on the distributed local state library under the condition that the user equipment is switched to other satellites by the satellite so as to realize state transition.

9. The network element state management method according to claim 8, wherein after said constructing and running the localized uplink session establishment procedure based on the distributed local state library, the network element state management method further comprises:

under the condition that the home network authorizes the satellite to access the target state, decrypting the encrypted state of the distributed local state library based on a public key to acquire data information corresponding to the state;

and in the case that the home network does not authorize the satellite to access the target state, rolling back to a preset standard program based on the home network.

10. The network element state management method according to claim 1, wherein the obtaining a stateless converged mobile network corresponding to the satellite network to be processed based on the mobile network position state, the distributed local state library and the state management flow specifically includes:

based on the mobile network position state, the distributed local state library and the state management flow, the home network of the satellite network to be processed is replaced by a target home network;

and obtaining a stateless heaven-earth fusion mobile network corresponding to the satellite network to be processed based on the home network common to the ground network and the satellite.

11. A network element state management device, characterized in that the network element state management device comprises:

the system comprises a first module, a second module and a third module, wherein the first module is used for decoupling a service area in a satellite network to be processed from a preset satellite, and defining the service area as a geographic position area, wherein the geographic position area is an area obtained by dividing blocks based on geographic positions, the service area in the satellite network to be processed is coupled with the preset satellite, the satellite network to be processed is a network constructed by satellites and a ground network, and the service area comprises a base station cell and a tracking area;

A second module for determining a mobile network location status of the satellite network to be processed based on the geographic location area;

the third module is used for hosting other states of the satellite network to be processed to local user equipment to obtain a distributed local state library, wherein the other states are states except the mobile network position state in the satellite network to be processed;

a fourth module, configured to run a state management flow of the key signaling of the satellite network to be processed based on the distributed local state library;

and a fifth module, configured to obtain a stateless converged mobile network corresponding to the satellite network to be processed based on the mobile network location state, the distributed local state library, and the state management flow, where the stateless converged mobile network is a network that is formed by the satellite and the ground network and has no state transition.

12. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the network element state management method of any of claims 1 to 10 when the program is executed by the processor.

13. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the network element state management method according to any of claims 1 to 10.