Method and device for switching ground network to non-ground network, and electronic equipment

Abstract

The invention discloses a method and a device for switching a ground network to a non-ground network and electronic equipment, and relates to the technical field of wireless networks, and the switching method comprises the following steps: receiving a network switching request sent by a service base station in the ground network, obtaining satellite base station information from the non-ground network, and sending the satellite base station information to a server; and determining a target satellite base station from the non-ground network based on the user terminal position information, the service information and the satellite base station information, and sending the target satellite base station to an access network element in the non-ground network so as to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element. According to the invention, the technical problem of communication interruption or service quality reduction caused by incapability of quickly switching from a ground base station to a satellite base station in related technologies is solved.

Description

Technical Field

[0001] The present invention relates to the field of wireless network technology, and in particular to a method for switching from a terrestrial network to a non-terrestrial network, a device thereof, and electronic equipment. Background Art

[0002] In mobile communications, when a user moves from one base station (also called a cell) to another, base station switching is required to ensure the continuity of communication. This switching may involve switching between different frequencies (inter-frequency) or different communication systems (inter-system). At present, the inter-frequency / inter-system switching process of the terrestrial network (TN) is as follows: after the user's mobile terminal needs to complete the measurement of the target cell (i.e., the target base station to be switched to), the serving cell (i.e., the base station currently connected to the mobile terminal) initiates a switching request process to the target cell.

[0003] However, if the above handover request process is applied to the handover from TN to NTN (Non Terrestrial Network), the mobile terminal is also required to measure the NTN target cell before initiating the handover request. However, unlike the terrestrial network where the mobile terminal is close to the geographical location of the cell (mostly within a few meters to tens of kilometers), the distance between the mobile terminal and the satellite in the NTN network is thousands to more than 350,000 kilometers, and there are network problems such as large links, high latency, and large frequency deviation, which will cause the mobile terminal to consume several seconds to tens of seconds for one measurement (the terrestrial network terminal measures about 0.6 milliseconds at a time), so that the user may encounter communication interruption or service quality degradation while waiting for the handover, affecting the user's service experience in the TN network.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method and device for switching from a terrestrial network to a non-terrestrial network, and an electronic device thereof, so as to at least solve the technical problem in the related art that it is impossible to quickly switch from a terrestrial base station to a satellite base station, resulting in communication interruption or reduced service quality.

[0006] According to one aspect of an embodiment of the present invention, a method for switching from a ground network to a non-ground network is provided, comprising: receiving a network switching request sent by a service base station in the ground network, wherein the service base station is a ground base station connected to a user terminal, and the network switching request carries at least user terminal location information and service information; obtaining satellite base station information from the non-ground network; determining a target satellite base station from the non-ground network based on the user terminal location information, service information and satellite base station information; and sending the target satellite base station to an access network element in the non-ground network, so as to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element.

[0007] Furthermore, before receiving the network switching request sent by the service base station in the ground network, it also includes: configuring an auxiliary switching network element in the non-ground network, wherein the auxiliary switching network element is used to determine the target satellite base station; connecting the auxiliary switching network element with the satellite network management and the satellite control and management platform respectively, wherein the satellite network management is used to manage the logical area information of the satellite base station and the service configuration information of the satellite base station; the satellite control and management platform is used to manage the satellite ephemeris information.

[0008] Furthermore, before receiving the network switching request sent by the service base station in the ground network, it also includes: when receiving a non-ground network service request sent by a user terminal, generating a network switching request through the service base station based on the user terminal location information and service information carried in the non-ground network service request; sending the network switching request to the auxiliary switching network element in the non-ground network through the service base station.

[0009] Furthermore, before generating a network switching request through the service base station based on the user terminal location information and service information carried in the non-terrestrial network service request, it also includes: measuring the signal data value of the connected service base station through the user terminal based on a preset time interval; and sending a non-terrestrial network service request to the service base station through the user terminal when the signal data value is less than a preset signal threshold.

[0010] Furthermore, the physical range of the satellite beam of each satellite base station in the non-ground network corresponds to a logical area range on the ground, and each satellite base station corresponds to an orbital system. The step of determining the target satellite base station from the non-ground network based on the user terminal location information, service information and satellite base station information includes: determining the target logical area of ​​the user terminal based on the user terminal location information and the logical area information contained in the satellite base station information, wherein the logical area information is used to record the multiple logical area ranges divided on the ground; determining a set of satellite base stations corresponding to the target logical area based on the satellite ephemeris information contained in the satellite base station information, wherein the satellite ephemeris information is used to record the physical range of the satellite beam of each satellite base station; determining the target orbital system based on the service information and the service configuration information contained in the satellite base station information, and determining the target satellite base station from the satellite base station set based on the target orbital system, wherein the service configuration information is used to record the service provided by the orbital system of each satellite base station.

[0011] Furthermore, after determining the target satellite base station from the satellite base station set, it also includes: when the load of the target satellite base station is greater than a preset load threshold, based on a preset load balancing strategy, selecting other satellite base stations from the non-ground network as the target satellite base station, wherein, when the preset load balancing strategy is a service priority strategy, determining a satellite base station consistent with the target orbital system from a neighboring logical area of ​​the target logical area as the target satellite base station; or, when the preset load balancing strategy is a distance priority strategy, determining other satellite base stations from the target logical area as the target satellite base station based on service information.

[0012] Furthermore, after the target satellite base station is sent to the access network element in the non-ground network, it also includes: obtaining non-ground network mobility management information from the non-ground network through the access network element; switching the network connection of the user terminal from the service base station to the target satellite base station based on the non-ground network mobility management information through the access network element.

[0013] According to another aspect of an embodiment of the present invention, a switching device for a ground network to a non-ground network is also provided, including: a receiving unit, used to receive a network switching request sent by a service base station in the ground network, wherein the service base station is a ground base station connected to a user terminal, and the network switching request carries at least: user terminal location information and service information; an acquisition unit, used to acquire satellite base station information from the non-ground network; a determination unit, used to determine a target satellite base station from the non-ground network based on the user terminal location information, the service information and the satellite base station information; and a sending unit, used to send the target satellite base station to an access network element in the non-ground network, so as to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element.

[0014] Furthermore, the switching device also includes: a first configuration module, used to configure an auxiliary switching network element in the non-ground network before receiving a network switching request sent by a service base station in a ground network, wherein the auxiliary switching network element is used to determine a target satellite base station; a first docking module, used to dock the auxiliary switching network element with a satellite network management and a satellite control and management platform respectively, wherein the satellite network management is used to manage logical area information and service configuration information of satellite base stations; and the satellite control and management platform is used to manage satellite ephemeris information.

[0015] Furthermore, the switching device also includes: a first generating module, which is used to generate a network switching request through the service base station based on the user terminal location information and service information carried in the non-ground network service request before receiving the network switching request sent by the service base station in the ground network; and a first sending module, which is used to send the network switching request to the auxiliary switching network element in the non-ground network through the service base station.

[0016] Furthermore, the switching device also includes: a first measurement module, which is used to measure the signal data value of the connected service base station based on a preset time interval through the user terminal before generating a network switching request through the service base station based on the user terminal location information and service information carried in the non-terrestrial network service request; and a second sending module, which is used to send a non-terrestrial network service request to the service base station through the user terminal when the signal data value is less than a preset signal threshold.

[0017] Furthermore, the physical range of the satellite beam of each satellite base station in the non-ground network corresponds to a logical area range on the ground, and each satellite base station corresponds to an orbital system. The determination unit includes: a first determination module, used to determine the target logical area of ​​the user terminal based on the user terminal location information and the logical area information contained in the satellite base station information, wherein the logical area information is used to record the multiple logical area ranges divided on the ground; a second determination module, used to determine the satellite base station set corresponding to the target logical area based on the satellite ephemeris information contained in the satellite base station information, wherein the satellite ephemeris information is used to record the physical range of the satellite beam of each satellite base station; a third determination module, used to determine the target orbital system based on the service information and the service configuration information contained in the satellite base station information, and based on the target orbital system, determine the target satellite base station from the satellite base station set, wherein the service configuration information is used to record the service provided by the orbital system of each satellite base station.

[0018] Furthermore, the switching device also includes: a first selection module, which is used to select other satellite base stations from the non-ground network as the target satellite base station after determining the target satellite base station from the satellite base station set, when the load of the target satellite base station is greater than a preset load threshold, based on a preset load balancing strategy, wherein, when the preset load balancing strategy is a service priority strategy, a satellite base station consistent with the target orbital system is determined from the neighboring logical area of ​​the target logical area as the target satellite base station; or, when the preset load balancing strategy is a distance priority strategy, other satellite base stations are determined as the target satellite base station from the target logical area based on service information.

[0019] Furthermore, the switching device also includes: a first acquisition module, used to obtain non-ground network mobility management information from the non-ground network through the access network element after sending the target satellite base station to the access network element in the non-ground network; a first switching module, used to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element based on the non-ground network mobility management information.

[0020] According to another aspect of an embodiment of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for switching from a ground network to a non-ground network as described above is implemented.

[0021] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement any one of the above-mentioned methods of switching from a ground network to a non-ground network.

[0022] In the present invention, by receiving a network switching request sent by a service base station in a ground network, satellite base station information is obtained from a non-ground network, and based on the user terminal location information, service information and satellite base station information, a target satellite base station is determined from the non-ground network, and the target satellite base station is sent to an access network element in the non-ground network, so that the network connection of the user terminal is switched from the service base station to the target satellite base station through the access network element, thereby solving the technical problem in the related art that it is impossible to quickly switch from a ground base station to a satellite base station, resulting in communication interruption or reduced service quality.

[0023] In the present invention, by deploying auxiliary switching network elements in the non-terrestrial network, the auxiliary switching network elements can be used to intelligently select the most suitable satellite base station for network switching according to the location information, business requirements and satellite base station information of the non-terrestrial network of the user terminal, thereby effectively improving the accuracy and efficiency of the switching, thereby ensuring that the user terminal can seamlessly switch from the terrestrial network to the non-terrestrial network during movement, achieving the technical effect of quickly switching from the terrestrial base station to the satellite base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 is a flow chart of an optional method for switching from a terrestrial network to a non-terrestrial network according to an embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of a hetero-frequency / hetero-system switching method according to the related art;

[0027] Figure 3 is a schematic diagram of an optional terminal measurement-free TN network switching method to an NTN network according to an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of an optional network topology of a TN and an NTN configured with ASF according to an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of an optional method of determining a target NTN cell by terminal measurement according to an embodiment of the present invention;

[0030] Figure 6 is a schematic diagram of an optional method of determining a target NTN cell by a network according to an embodiment of the present invention;

[0031] Figure 7 is a schematic diagram of an optional signaling transmission process according to an embodiment of the present invention;

[0032] Figure 8 is a schematic diagram of an optional ASF determining a target NTN cell according to an embodiment of the present invention;

[0033] Fig. 9 is a schematic diagram of an optional switching device from a terrestrial network to a non-terrestrial network according to an embodiment of the present invention;

[0034] Fig.10The present invention is a hardware structure block diagram of an electronic device (or mobile device) for a method of switching from a terrestrial network to a non-terrestrial network according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] It should be noted that the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) collected and involved in the present invention are all information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of relevant data are in compliance with the relevant laws, regulations and standards of the relevant regions, necessary confidentiality measures are taken, and public order and good customs are not violated, and corresponding operation entrances are provided for users to choose to authorize or refuse. For example, an interface is set between the system and the relevant users or organizations. Before obtaining relevant information, it is necessary to send an acquisition request to the aforementioned user or organization through the interface, and obtain relevant information after receiving the consent information fed back by the aforementioned user or organization.

[0038] The present invention proposes a method for switching from a TN network to an NTN network without terminal measurement. By adding an auxiliary switching function (ASF) network element (i.e., auxiliary switching network element) in a satellite core network (i.e., a non-terrestrial network), combined with user location information, service QoS (Quality of Service) information, etc. reported on the TN network, combined with satellite ephemeris, geographical location division of NTN logical cells, NTN system QoS configuration, NTN mobility management information, etc., the target satellite cell for switching from the TN network to the NTN is determined, and the target satellite cell is transmitted to the NTN AMF (Terrestrial Access Management Function, i.e., the access network element of the NTN) to realize subsequent switching.

[0039] The present invention is described in detail below in conjunction with various embodiments.

[0040] Embodiment 1

[0041] According to an embodiment of the present invention, an embodiment of a method for switching from a ground network to a non-ground network is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0042] Figure 1 is a flow chart of an optional method for switching from a terrestrial network to a non-terrestrial network according to an embodiment of the present invention, such as Figure 1 As shown, the method comprises the following steps:

[0043] Step S101, receiving a network switching request sent by a serving base station in a ground network, wherein the serving base station is a ground base station connected to a user terminal, and the network switching request carries at least: user terminal location information and service information.

[0044] In the embodiment of the present invention, an ASF network element (i.e., an auxiliary switching network element) is added to the non-terrestrial network so that the ASF network element determines the target satellite cell for switching from the TN network to the NTN network, thereby realizing that the switching initiated by the TN network to the NTN network is changed from the current "switching request to a certain NTN cell" to "switching request to the entire NTN network", thereby avoiding the process of the terminal measuring the target satellite cell before the switching, and further avoiding the problem of large delay and other problems affecting user perception when initiating switching from the TN network to the NTN network.

[0045] In step S101, a network switching request sent by a service base station in a terrestrial network (i.e., a terrestrial base station connected to a user terminal) may be received by an ASF network element in a non-terrestrial network. The network switching request carries user terminal location information and service information.

[0046] Here, the user terminal location information is used to indicate the regional location of the user terminal, and the service information is service QoS information, including: the service quality required by the user terminal, for example, requirements for bandwidth, delay, packet loss rate, error rate and other services.

[0047] Step S102, obtaining satellite base station information from a non-terrestrial network.

[0048] In step S102, the ASF network element can obtain satellite base station information (including: logical area information, service configuration information, satellite ephemeris information, etc.) from the non-ground network, specifically: the ASF network element can obtain the logical area information of the satellite base station (that is, the geographical location division information of the NTN logical cell, for example, geographical grid division based on the physical range of the satellite beam of each satellite base station on the ground) and the service configuration information of the satellite base station (that is, the NTN system QoS configuration information, for example, the QoS that each satellite base station can provide) from the satellite OMC (Operation and Maintenance Center) network management to which it is connected, and obtain satellite ephemeris information (used to describe the parameters of the satellite's movement in space, including the satellite's orbital parameters and time, so as to determine the physical range of the satellite beam of each satellite base station based on these parameters) from the satellite control platform to which it is connected.

[0049] Step S103, determining a target satellite base station from a non-terrestrial network based on the user terminal location information, service information, and satellite base station information.

[0050] In step S103, the ASF network element can determine the target satellite cell (i.e., target satellite base station) for the ground network to switch to NTN based on the user location information (i.e., user terminal location information) and service QoS information reported by the ground network, combined with satellite ephemeris, geographical location division of NTN logical cells, NTN system QoS configuration, etc. In this way, by determining the target NTN cell through the ASF network element, the information of the specific NTN cell can be deleted in the network switching request initiated by the TN network to the NTN, thereby avoiding the measurement of the target NTN cell before switching.

[0051] Step S104: sending the target satellite base station to an access network element in the non-terrestrial network, so as to switch the network connection of the user terminal from the serving base station to the target satellite base station through the access network element.

[0052] In the embodiment of the present invention, after the ASF network element determines the target satellite cell, it forwards the target satellite cell to the NTNAMF (ie, the access network element in the non-terrestrial network) to complete the subsequent switching process through the NTN AMF.

[0053] In this way, it can ensure that when users move beyond the coverage of the ground network, they can smoothly switch to the non-ground network. Especially in scenarios where the ground network is difficult to cover, such as remote areas, oceans, and air, it can provide continuous network services and improve user experience.

[0054] In summary, by deploying auxiliary switching network elements in non-terrestrial networks, auxiliary switching network elements can be used to intelligently select the most suitable satellite base station for network switching according to the location information, business requirements and satellite base station information of the non-terrestrial network of the user terminal, thereby effectively improving the accuracy and efficiency of the switching, thereby ensuring that the user terminal seamlessly switches from the terrestrial network to the non-terrestrial network during movement, achieving the technical effect of quickly switching from the terrestrial base station to the satellite base station, and thus solving the technical problem in the related technology that it is impossible to quickly switch from the terrestrial base station to the satellite base station, resulting in communication interruption or reduced service quality.

[0055] Figure 2 is a schematic diagram of a heterogeneous frequency / heterogeneous system switching method in the related art, such as Figure 2 As shown, the process of hetero-frequency / heterogeneous system switching in the related art is as follows:

[0056] ① After the serving base station S-NB sends the initiation test configuration, the terminal UE measures that the signal coverage of the cell (i.e. the serving base station S-NB) does not meet the threshold (i.e. the signal threshold), and reports to the serving base station S-NB;

[0057] ② The serving base station S-NB sends down the execution configuration. After the terminal UE measures the signal coverage of the neighboring cell (i.e. the target base station T-NB) and meets the threshold, it reports to the serving base station S-NB;

[0058] ③ Switching from the serving base station S-NB to the target base station T-NB is performed through 5GC (5G Core, a key component in the mobile communication network) or EPC (Evolved Packet Core, a key component in the mobile communication network);

[0059] ④ The serving base station S-NB sends a handover command, and the terminal UE initiates access to the target base station T-NB.

[0060] Figure 3 is a schematic diagram of an optional method for switching a TN network to an NTN network without terminal measurement according to an embodiment of the present invention, such as Figure 3 As shown in the figure, the process of switching from a TN network without terminal measurement to an NTN network is as follows:

[0061] ① After the serving base station S-NB sends the initiation test configuration, the terminal UE measures that the signal coverage of the cell (i.e. the serving base station S-NB) does not meet the threshold (i.e. the signal threshold), and reports to the serving base station S-NB;

[0062] ② The TN and NTN interactive switching process is carried out through TN CN (core network of terrestrial network) or NTN CN (core network of non-terrestrial network), and the target base station T-NB is determined by the ASF network element in NTN CN;

[0063] ③ The serving base station S-NB sends a handover command, and the terminal UE initiates access to the target base station T-NB.

[0064] from Figure 2 and Figure 3 It can be seen that the terminal measurement-free TN network to NTN network switching method proposed in this embodiment can avoid step 2 in the hetero-frequency / hetero-system switching method. The TN network does not request to switch to a certain NTN cell, but to switch to the entire NTN network, and then the NTN determines the target cell.

[0065] In order to realize measurement-free switching network, in the switching method from a ground network to a non-ground network provided in Example 1 of the present application, before receiving a network switching request sent by a service base station in the ground network, it also includes: configuring an auxiliary switching network element in the non-ground network, wherein the auxiliary switching network element is used to determine the target satellite base station; connecting the auxiliary switching network element with the satellite network management and the satellite control and management platform respectively, wherein the satellite network management is used to manage the logical area information of the satellite base station and the service configuration information of the satellite base station; the satellite control and management platform is used to manage the satellite ephemeris information.

[0066] In an embodiment of the present invention, in order to implement the process of terminal-free measurement of the target NTN cell and avoid problems such as large delays that affect user perception, an ASF network element (i.e., an auxiliary switching network element) can be defined in the NTN core network (i.e., a non-terrestrial network). The ASF network element is used to determine the target cell for the ground network switching NTN based on user location information, service QoS information, etc. reported by the ground network, and in combination with satellite ephemeris, geographical location division of NTN logical cells, NTN system QoS configuration, NTN mobility management information, etc.

[0067] In the embodiment of the present invention, ASF is a virtualized logical network element composed of a server and deployed in the control plane of the NTN core network. It can interact with other core network elements through the AF (Application Framework) standardized interface (Naf), or be jointly set up with AMF as an AMF enhanced function.

[0068] In an embodiment of the present invention, the ASF is connected to the satellite OMC network management (i.e., satellite network management) and the satellite control and management platform to obtain satellite cell configuration information (including: logical area information of satellite base stations, service configuration information of satellite base stations, etc.) and satellite ephemeris information, and then combines the user location, service and other information reported on the TN network to calculate the target NTN cell that can serve the user.

[0069] Figure 4 is a schematic diagram of an optional network topology of a TN and an NTN configured with ASF according to an embodiment of the present invention, such as Figure 4 As shown in the figure, the network topology of the 5G TN network and the network topology of the 5G NTN network configured with ASF are shown. The network topology of the 5G TN network includes the following components: PCF (Polity Control Function, a component for policy control function), NSSF (Network Slice Selection Function, a component for network slice selection), SMF (Session Management Function, a component for session management), UPF (User Plane Function, a component with user plane function), AMF (Access and Mobility Management Function, a component with access and mobility management function, also known as access network element), SEPP / SCP (Service Exposure and Programming Platform / Service Capability Exposure Platform); the network topology of the 5G NTN network includes the following components: PCF, NSSF, SMF, UPF, AMF, SEPP / SCP and ASF.

[0070] exist Figure 4 In the present invention, the AMF in the TN network is connected to the ASF in the NTN network through the standardized interface Naf, and the ASF can be connected to the AMF in the NTN network through the standardized interface Naf, so that when the terminal measures that the TN base station does not meet the signal threshold, the switching request is forwarded to the ASF in the NTN network through the AMF of the TN base station, and the target NTN base station is determined through the ASF, so that the network connection of the terminal is switched from the TN base station to the target NTN base station.

[0071] exist Figure 4In the process, ASF connects with OMC network management and satellite control platform, and can obtain cell coverage area, QoS, frequency, bandwidth, load and other information from OMC network management, and obtain ephemeris information from satellite control platform.

[0072] Figure 5 is a schematic diagram of an optional method of determining a target NTN cell by terminal measurement according to an embodiment of the present invention, such as Figure 5 As shown, before the terminal UE switches from the S-NB in ​​the TN CN to the NTN CN, the terminal needs to measure the T-NB in ​​the NTN CN to determine the target NTN cell, wherein the switching information initiated by the TN network to the NTN includes the target NTN cell.

[0073] Figure 6 FIG. 1 is a schematic diagram of an optional method for determining a target NTN cell by a network according to an embodiment of the present invention. Figure 6 As shown, the terminal UE can directly initiate a handover to the NTN CN through the S-NB in ​​the TN CN, but the handover request does not include the target NTN cell. Then, the target T-NB is determined through the ASF in the NTN CN and forwarded to the AMF to perform subsequent handover procedures.

[0074] In order to improve the accuracy of generating network switching requests, in the switching method from a ground network to a non-ground network provided in Example 1 of the present application, before receiving the network switching request sent by a service base station in the ground network, it also includes: when receiving a non-ground network service request sent by a user terminal, generating a network switching request through the service base station based on the user terminal location information and service information carried in the non-ground network service request; and sending the network switching request to an auxiliary switching network element in the non-ground network through the service base station.

[0075] In an embodiment of the present invention, if a user terminal triggers a switching event (for example, the signal of the service base station to which the user terminal is currently connected weakens), a non-terrestrial network service request (carrying the current location of the user terminal and the required service requirements, for example, requiring a larger amount of computing power or a smaller delay, etc.) may be sent to the service base station. The service base station may then generate a network switching request (i.e., a handover to NTN required demand) based on the user terminal location information and service information carried in the non-terrestrial network service request, and send the network switching request to the auxiliary switching network element in the non-terrestrial network, so as to determine the target satellite base station to be switched to through the auxiliary switching network element.

[0076] In the embodiment of the present invention, the network switching request includes: switching type, reason, target network type (such as NTN network, not involving specific NTN cells), session information, and user location information (ie, user terminal location information).

[0077] Illustratively, the message body of handover to NTN required indicates handover to NTN in the handover type, does not include target NTN cell information, and adds user location information.

[0078] Figure 7 is a schematic diagram of an optional signaling transmission process according to an embodiment of the present invention, such as Figure 7 As shown, the following process is included:

[0079] (1) The terminal UE monitors the gNB (i.e., the serving base station). If a handover condition is triggered, such as weakened TN network coverage or specific service requirements, the terminal UE reports the event to the gNB (i.e., reports the NTN service request);

[0080] (2) The gNB sends a handover to NTN request to the AMF in the TN network. The handover to NTN request does not contain the NTN target cell information, but adds the user location information.

[0081] (3) The AMF in the TN network sends NTN relocation (i.e., non-terrestrial network relocation) to the ASF in the NTN network. The NTN relocation includes: user IMSI (Internal Mobile Subscriber Identity), TEID (Tunnel Endpoint Identifier), PDU (Protocol Data Unit), and user location information;

[0082] (4) The ASF determines the target NTN cell based on the user location, service information, etc., and sends Nasf_NTN relocation (Non-Access Stratum Function_NTN relocation, i.e., a request to relocate to the target NTN cell) to the AMF in the NTN network, and adds the target identification (target cell information) in the Nasf_NTN relocation.

[0083] In order to determine the triggering conditions for the user terminal to switch networks, in the method for switching from a ground network to a non-ground network provided in Example 1 of the present application, before generating a network switching request through the service base station based on the user terminal location information and service information carried in the non-ground network service request, it also includes: measuring the signal data value of the connected service base station through the user terminal based on a preset time interval; and sending a non-ground network service request to the service base station through the user terminal when the signal data value is less than a preset signal threshold.

[0084] In an embodiment of the present invention, the user terminal can periodically measure the signal data value (for example, signal strength value, signal quality value, etc.) of the connected service base station. If the signal data value is less than a preset signal threshold (which can be set according to actual conditions, for example, a strength threshold, a quality threshold, etc.), it indicates that the user terminal triggers a switching condition and the user terminal needs to send a non-terrestrial network service request to the service base station.

[0085] In an embodiment of the present invention, the physical range of the satellite beam of each satellite base station in the non-ground network corresponds to a logical area range on the ground, and each satellite base station corresponds to an orbital system. In order to improve the accuracy of determining the target satellite base station, in the method for switching from a ground network to a non-ground network provided in Example 1 of the present application, the target logical area of ​​the user terminal is determined based on the user terminal location information and the logical area information contained in the satellite base station information, wherein the logical area information is used to record the multiple logical area ranges divided on the ground; based on the satellite ephemeris information contained in the satellite base station information, a set of satellite base stations corresponding to the target logical area is determined, wherein the satellite ephemeris information is used to record the physical range of the satellite beam of each satellite base station; based on the service information and the service configuration information contained in the satellite base station information, the target orbital system is determined, and based on the target orbital system, the target satellite base station is determined from the set of satellite base stations, wherein the service configuration information is used to record the service provided by the orbital system of each satellite base station.

[0086] In the embodiment of the present invention, the NTN network clarifies the coverage range of each satellite cell, and the coverage position of each cell is fixed (that is, the physical range of the satellite beam of each satellite base station in the non-ground network corresponds to the logical area range of the ground), and the NTN network can determine the orbital system of the service according to the service QoS (such as GEO (Geostat ionary Orbit, that is, a high-orbit satellite system with an altitude of 35786km), MEO (Med ium Earth Orbit, that is, a medium-orbit satellite system with an altitude of 8000km-25000km), LEO (Low Earth Orbit, that is, a low-orbit satellite system with an altitude of less than 2000km), OTHERSAT (satellite types and related systems not defined in 3GPP (i.e., global mobile communication standards))) (i.e., each satellite base station corresponds to an orbital system).

[0087] In the embodiment of the present invention, the ASF can first determine the coverage of the NTN satellite cell, that is, the physical range of the satellite beam of the NTN satellite cell can be determined based on the satellite ephemeris information (recording the physical range of the satellite beam of each satellite base station), and then the coverage of each NTN satellite cell can be determined based on the correspondence between the physical range of the satellite beam of the NTN satellite cell and the logical area range. In addition, the ASF can determine the target logical area where the user terminal is located based on the user terminal location information and logical area information reported by the TN network (recording the range of multiple logical areas divided on the ground), and then determine the set of satellite base stations that can cover the target logical area (that is, the set of NTN satellite cells closest to the user terminal). Afterwards, if the satellite base station set includes multiple satellite base stations, the service QoS can be compared with the QoS type of the NTN system to determine the optional QoS for the user coverage area, that is, according to the service information of the user terminal and the service configuration information contained in the satellite base station information (recording the service services provided by the orbit system of each satellite base station, such as low latency, large bandwidth, etc.), determine the target orbit system (for example, if the service requirement of the user terminal is low latency, then according to the service configuration information, the LEO system can provide low-latency services), and according to the target orbit system, determine the target satellite base station from the satellite base station set (that is, the satellite base station using the target orbit system can be determined as the target satellite base station). In this way, a satellite base station that is close to the user terminal and can meet the service requirements of the user terminal can be used to provide services to the user terminal.

[0088] In order to further improve the quality of network services, in the method for switching from a ground network to a non-ground network provided in Example 1 of the present application, after determining the target satellite base station from a set of satellite base stations, it also includes: when the load of the target satellite base station is greater than a preset load threshold, based on a preset load balancing strategy, selecting other satellite base stations from the non-ground network as target satellite base stations, wherein, when the preset load balancing strategy is a service priority strategy, determining a satellite base station consistent with the target orbital system from a neighboring logical area of ​​the target logical area as the target satellite base station; or, when the preset load balancing strategy is a distance priority strategy, determining other satellite base stations from the target logical area as target satellite base stations based on service information.

[0089] In an embodiment of the present invention, if the load of the target satellite base station is greater than a preset load threshold (which can be set according to actual conditions), in order to ensure the quality of service, it is necessary to reselect other satellite base stations from the non-ground network as the target satellite base station according to a preset load balancing strategy.

[0090] In this embodiment, the preset load balancing strategy can be formulated at the OMC network management end, and the strategy can be flexibly configured according to network capabilities and business scenarios, such as load balancing, frequency priority-based, business selection-based, and other strategies.

[0091] In an embodiment of the present invention, if the preset load balancing strategy is a service priority strategy, a satellite base station consistent with the target orbital system can be determined from the neighboring logical area of ​​the target logical area (i.e., the logical area adjacent to the target logical area) as the target satellite base station. Although the satellite base station serving the user terminal becomes farther away, it can still provide the user terminal with the required service quality.

[0092] In an embodiment of the present invention, if the preset load balancing strategy is a distance priority strategy, other satellite base stations can be determined as target satellite base stations from the target logical area based on the service information, that is, other satellite base stations with service requirements that are similar to those of the user terminal are selected from the target logical area as target satellite base stations. For example, if the user terminal requires low latency, but the low earth orbit (LEO) satellite in the target logical area is heavily loaded, a medium earth orbit (MEO) satellite can be selected to provide services to the user terminal.

[0093] Figure 8 FIG. 1 is a schematic diagram of an optional ASF determining a target NTN cell according to an embodiment of the present invention. Figure 8As shown, the coverage of the NTN cell can be clarified based on the ephemeris information and the definition on the network management side. If there are multiple satellite coverage systems in the same area, the target NTN cell system type is further determined through the user service QoS and the QoS strategy of the satellite coverage system. If the same area has multiple frequency cells covered by the same satellite system, the target NTN frequency and cell are determined through the load balancing strategy, and finally the target NTN cell is determined.

[0094] In order to quickly switch networks, in the method for switching from a ground network to a non-ground network provided in Example 1 of the present application, after sending the target satellite base station to the access network element in the non-ground network, it also includes: obtaining non-ground network mobility management information from the non-ground network through the access network element; and switching the network connection of the user terminal from the service base station to the target satellite base station based on the non-ground network mobility management information through the access network element.

[0095] In an embodiment of the present invention, after the ASF network element sends the determined target satellite base station to the access network element in the non-ground network, it can obtain non-ground network mobility management information (recording communication specifications and protocols) from the non-ground network through the access network element, and then switch the network connection of the user terminal from the service base station to the target satellite base station based on the non-ground network mobility management information.

[0096] In the embodiment of the present invention, by introducing an auxiliary switching network element, the most suitable satellite base station can be intelligently selected for network switching according to the location information, service requirements and satellite base station information of the non-terrestrial network of the user terminal, which effectively improves the accuracy and efficiency of the switching, and can not only ensure that the user can seamlessly switch from the terrestrial network to the non-terrestrial network during the mobile process, but also can realize load balancing and optimize resource allocation according to the load condition and service configuration of the satellite base station, thereby improving the user experience and improving the utilization rate of network resources. In addition, through the preset load balancing strategy, the stability and quality of the network service can be guaranteed even in a high-load environment, providing users with more reliable and efficient communication services.

[0097] The following is a detailed description in conjunction with another embodiment.

[0098] Embodiment 2

[0099] A switching device from a terrestrial network to a non-terrestrial network provided in this embodiment includes a plurality of implementation units, each of which corresponds to each implementation step in the above-mentioned first embodiment.

[0100] Fig. 9 is a schematic diagram of an optional switching device from a terrestrial network to a non-terrestrial network according to an embodiment of the present invention, such as Fig. 9As shown, the switching device may include: a receiving unit 90 , an acquiring unit 91 , a determining unit 92 , and a sending unit 93 .

[0101] The receiving unit 90 is configured to receive a network switching request sent by a serving base station in a ground network, wherein the serving base station is a ground base station connected to a user terminal, and the network switching request carries at least: user terminal location information and service information;

[0102] An acquisition unit 91 is used to acquire satellite base station information from a non-terrestrial network;

[0103] A determination unit 92, configured to determine a target satellite base station from a non-terrestrial network based on the user terminal location information, service information, and satellite base station information;

[0104] The sending unit 93 is used to send the target satellite base station to an access network element in the non-terrestrial network, so as to switch the network connection of the user terminal from the serving base station to the target satellite base station through the access network element.

[0105] The above-mentioned switching device can receive a network switching request sent by a service base station in a ground network through a receiving unit 90, obtain satellite base station information from a non-ground network through an acquisition unit 91, determine a target satellite base station from the non-ground network based on user terminal location information, service information and satellite base station information through a determination unit 92, and send the target satellite base station to an access network element in the non-ground network through a sending unit 93, so as to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element, thereby solving the technical problem in the related technology that it is impossible to quickly switch from a ground base station to a satellite base station, resulting in communication interruption or deterioration in service quality.

[0106] Optionally, the switching device also includes: a first configuration module, used to configure an auxiliary switching network element in the non-ground network before receiving a network switching request sent by a service base station in the ground network, wherein the auxiliary switching network element is used to determine the target satellite base station; a first docking module, used to dock the auxiliary switching network element with the satellite network management and the satellite control and management platform respectively, wherein the satellite network management is used to manage the logical area information of the satellite base station and the service configuration information of the satellite base station; the satellite control and management platform is used to manage the satellite ephemeris information.

[0107] Optionally, the switching device also includes: a first generating module, used to generate a network switching request through the service base station based on the user terminal location information and service information carried in the non-ground network service request, before receiving the network switching request sent by the service base station in the ground network; a first sending module, used to send the network switching request to the auxiliary switching network element in the non-ground network through the service base station.

[0108] Optionally, the switching device also includes: a first measurement module, used to measure the signal data value of the connected service base station based on a preset time interval through the user terminal before generating a network switching request through the service base station based on the user terminal location information and service information carried in the non-terrestrial network service request; a second sending module, used to send a non-terrestrial network service request to the service base station through the user terminal when the signal data value is less than a preset signal threshold.

[0109] Optionally, the physical range of the satellite beam of each satellite base station in the non-ground network corresponds to a logical area range on the ground, and each satellite base station corresponds to an orbital system. The determination unit includes: a first determination module, used to determine the target logical area of ​​the user terminal based on the user terminal location information and the logical area information contained in the satellite base station information, wherein the logical area information is used to record the multiple logical area ranges divided on the ground; a second determination module, used to determine the satellite base station set corresponding to the target logical area based on the satellite ephemeris information contained in the satellite base station information, wherein the satellite ephemeris information is used to record the physical range of the satellite beam of each satellite base station; a third determination module, used to determine the target orbital system based on the service information and the service configuration information contained in the satellite base station information, and based on the target orbital system, determine the target satellite base station from the satellite base station set, wherein the service configuration information is used to record the service provided by the orbital system of each satellite base station.

[0110] Optionally, the switching device also includes: a first selection module, which is used to select other satellite base stations from the non-ground network as the target satellite base station after determining the target satellite base station from the satellite base station set, when the load of the target satellite base station is greater than a preset load threshold, based on a preset load balancing strategy, wherein, when the preset load balancing strategy is a service priority strategy, a satellite base station consistent with the target orbital system is determined from the neighboring logical area of ​​the target logical area as the target satellite base station; or, when the preset load balancing strategy is a distance priority strategy, other satellite base stations are determined from the target logical area as the target satellite base station based on service information.

[0111] Optionally, the switching device also includes: a first acquisition module, used to obtain non-ground network mobility management information from the non-ground network through the access network element after sending the target satellite base station to the access network element in the non-ground network; a first switching module, used to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element based on the non-ground network mobility management information.

[0112] The above-mentioned switching device may also include a processor and a memory. The above-mentioned receiving unit 90, acquisition unit 91, determination unit 92, sending unit 93, etc. are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.

[0113] The processor includes a kernel, and the kernel retrieves the corresponding program unit from the memory. The kernel can be set to one or more, and the target satellite base station is sent to the access network element in the non-terrestrial network by adjusting the kernel parameters, so as to switch the network connection of the user terminal from the serving base station to the target satellite base station through the access network element.

[0114] The above-mentioned memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (fl ash RAM), and the memory includes at least one storage chip.

[0115] According to another aspect of an embodiment of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium, the non-volatile computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, implementing any of the above-mentioned methods for switching from a ground network to a non-ground network.

[0116] When the computer program product is executed on a data processing device, it is suitable for executing a program that is initialized with the following method steps: receiving a network switching request sent by a service base station in a terrestrial network, obtaining satellite base station information from a non-terrestrial network, determining a target satellite base station from the non-terrestrial network based on user terminal location information, service information and satellite base station information, and sending the target satellite base station to an access network element in the non-terrestrial network, so as to switch the network connection of the user terminal from the service base station to the target satellite base station through the access network element.

[0117] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors implement the above-mentioned method of switching from a ground network to a non-ground network.

[0118] Fig.10 FIG. 1 is a hardware structure block diagram of an electronic device (or mobile device) for a method of switching from a terrestrial network to a non-terrestrial network according to an embodiment of the present invention. Fig.10 As shown, the electronic device may include one or more processors (e.g., Fig.10The processor 1002a, processor 1002b, ..., processor 1002n, etc., which may include but are not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 1004 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a keyboard, a power supply and / or a camera. It can be understood by those skilled in the art that Fig.10 The structure shown is only for illustration and does not limit the structure of the above electronic device. Fig.10 More or fewer components as shown, or with Fig.10 Different configurations are shown.

[0119] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0120] The embodiments or examples of the present disclosure are not exhaustive, but are only illustrative of some embodiments or examples, and are not intended to be specific limitations on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment or example can be implemented as an independent example, and the steps can be combined arbitrarily. For example, the scheme after removing some steps in a certain embodiment or example can also be implemented as an independent example, and the order of the steps in a certain embodiment or example can be arbitrarily exchanged. In addition, the optional methods or optional examples in a certain embodiment or example can be combined arbitrarily; in addition, the various embodiments or examples can be combined arbitrarily, for example, some or all steps of different embodiments or examples can be combined arbitrarily, and a certain embodiment or example can be combined arbitrarily with the optional methods or optional examples of other embodiments or examples.

[0121] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic, for example, the division of units can be a logical function division, and there can be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0123] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0124] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0125] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0126] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for switching from a terrestrial network to a non-terrestrial network, characterized in that: include: Receiving a network switching request sent by a serving base station in a ground network, wherein the serving base station is a ground base station connected to a user terminal, and the network switching request carries at least: location information of the user terminal and service information; Acquiring satellite base station information from the non-terrestrial network; Determine a target satellite base station from the non-terrestrial network based on the user terminal location information, the service information and the satellite base station information; The target satellite base station is sent to an access network element in the non-terrestrial network, so as to switch the network connection of the user terminal from the serving base station to the target satellite base station through the access network element.

2. The switching method according to claim 1, characterized in that: Before receiving the network switching request sent by the serving base station in the ground network, the method further includes: configuring an auxiliary switching network element in the non-terrestrial network, wherein the auxiliary switching network element is used to determine the target satellite base station; The auxiliary switching network element is connected to the satellite network management and the satellite control platform respectively, wherein the satellite network management is used to manage the logical area information of the satellite base station and the service configuration information of the satellite base station; the satellite control platform is used to manage the satellite ephemeris information.

3. The switching method according to claim 1, characterized in that: Before receiving the network switching request sent by the serving base station in the ground network, the method further includes: In the case of receiving the non-terrestrial network service request sent by the user terminal, generating the network switching request by the serving base station based on the user terminal location information and the service information carried in the non-terrestrial network service request; The network switching request is sent to an auxiliary switching network element in the non-terrestrial network through the serving base station.

4. The switching method according to claim 3, characterized in that: Before generating the network switching request by the serving base station based on the user terminal location information and the service information carried in the non-terrestrial network service request, the method further includes: Measuring, by the user terminal, a signal data value of the connected serving base station based on a preset time interval; The non-terrestrial network service request is sent to the serving base station by the user terminal when the signal data value is less than a preset signal threshold.

5. The switching method according to claim 1, characterized in that: The physical range of the satellite beam of each satellite base station in the non-ground network corresponds to a logical area range on the ground, and each of the satellite base stations corresponds to an orbital system. The step of determining a target satellite base station from the non-ground network based on the user terminal location information, the service information, and the satellite base station information includes: Determine a target logical area of ​​the user terminal based on the user terminal location information and the logical area information included in the satellite base station information, wherein the logical area information is used to record a plurality of logical area ranges divided on the ground; Determine a set of satellite base stations corresponding to the target logical area based on satellite ephemeris information included in the satellite base station information, wherein the satellite ephemeris information is used to record the physical range of the satellite beam of each satellite base station; Based on the service information and the service configuration information contained in the satellite base station information, the target orbital system is determined, and based on the target orbital system, the target satellite base station is determined from the satellite base station set, wherein the service configuration information is used to record the business services provided by the orbital system of each satellite base station.

6. The switching method according to claim 5, characterized in that: After determining the target satellite base station from the set of satellite base stations, the method further includes: When the load of the target satellite base station is greater than a preset load threshold, based on a preset load balancing strategy, another satellite base station is selected from the non-terrestrial network as the target satellite base station, wherein: In the case where the preset load balancing strategy is a service priority strategy, determining the satellite base station consistent with the target orbit system from the neighboring logical area of ​​the target logical area as the target satellite base station; or, In the case where the preset load balancing strategy is a distance priority strategy, based on the service information, other satellite base stations are determined from within the target logical area as the target satellite base station.

7. The switching method according to claim 1, characterized in that: After sending the target satellite base station to the access network element in the non-terrestrial network, the method further includes: Acquiring non-terrestrial network mobility management information from the non-terrestrial network through the access network element; The network connection of the user terminal is switched from the serving base station to the target satellite base station through the access network element based on the non-terrestrial network mobility management information.

8. A switching device from a terrestrial network to a non-terrestrial network, characterized in that: include: A receiving unit, configured to receive a network switching request sent by a serving base station in a ground network, wherein the serving base station is a ground base station connected to a user terminal, and the network switching request carries at least: user terminal location information and service information; An acquisition unit, configured to acquire satellite base station information from the non-terrestrial network; a determining unit, configured to determine a target satellite base station from the non-terrestrial network based on the user terminal location information, the service information, and the satellite base station information; A sending unit is used to send the target satellite base station to an access network element in the non-terrestrial network, so as to switch the network connection of the user terminal from the serving base station to the target satellite base station through the access network element.

9. A computer program product, characterized in that It comprises a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for switching from a terrestrial network to a non-terrestrial network as claimed in any one of claims 1 to 7 is implemented.

10. An electronic device, characterized in that: It includes one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method for switching from a ground network to a non-ground network as described in any one of claims 1 to 7.

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