Cell selection method, device, electronic device, and computer-readable storage medium

Abstract

The present disclosure provides a cell selection method, device, electronic equipment and computer readable storage medium. A target device communicates in a first communication cell of a first communication network. The cell selection method comprises: receiving a first broadcast signal issued by the first communication cell, the first broadcast signal carrying a second cell identifier; determining that the target device does not satisfy a first preset condition in the first communication cell; determining that a second communication cell corresponding to the second cell identifier satisfies a second preset condition for the target device to camp on, the second communication cell being in a second communication network; and the target device transferring to the second communication cell in the second communication network to camp on. The technical solution provided by the embodiments of the present disclosure can improve the service quality of the target device through cell selection.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a cell selection method and device, an electronic device, and a computer-readable storage medium. Background Art

[0002] In related technologies, when a device is communicating, the selection and reselection of a communication cell is only performed under a single network (such as a terrestrial cellular network). If the network does not deploy a base station in a certain area or deploys too few base stations, the devices in the area will have poor signals and poor network quality.

[0003] Therefore, how to ensure the network quality of the target device is very important for the communication between the target devices.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure. Summary of the Invention

[0005] The present disclosure aims to provide a cell selection method, apparatus, electronic device, and computer-readable storage medium to improve the network quality of a target device.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by practice of the present disclosure.

[0007] An embodiment of the present disclosure provides a cell selection method, including: receiving a first broadcast signal sent by the first communication cell, the first broadcast signal carrying a second cell identifier; determining that the target device does not meet a first preset condition in the first communication cell; determining that a second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside, and the second communication cell is located in a second communication network; and the target device is transferred to the second communication cell in the second communication network for residency.

[0008] In some embodiments, the first communication network is a terrestrial cellular network, the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the second communication network is a satellite network, and the second communication cell is a target satellite network cell in the satellite network; wherein, determining that the target device does not meet the first preset condition in the first communication cell includes: if the received signal power of the first broadcast signal received by the target device is less than a first preset power threshold, then determining that the target device does not meet the first preset condition in the target terrestrial cellular cell.

[0009] In some embodiments, determining that the second communication cell corresponding to the second cell identifier meets the second preset condition for the target device to reside includes: receiving a second broadcast signal sent by the target satellite network cell according to the second cell identifier; if the received signal power of the second broadcast signal received by the target device is greater than the second preset power, determining that the target satellite network cell meets the second preset condition for the target device to reside.

[0010] In some embodiments, the first communication network is a satellite network, the first communication cell is a target satellite network cell in the satellite network, the second communication network is a terrestrial cellular network, and the second communication cell is a target terrestrial cellular cell in the terrestrial cellular network; wherein, determining that the target device does not meet the first preset condition in the first communication cell includes: obtaining the location information of the target device; if it is determined that the target device is located within the coverage range of the target terrestrial cellular cell based on the location information of the target device, then determining that the target device does not meet the first preset condition in the target satellite network cell.

[0011] In some embodiments, determining that the second communication cell corresponding to the second cell identifier meets the second preset condition for the target device to reside includes: receiving a third broadcast signal sent by the target terrestrial cellular cell in the terrestrial cellular network according to the second cell identifier; if the received signal power of the third broadcast signal received by the target device is greater than the third preset power, determining that the target terrestrial cellular cell meets the second preset condition for the target device to reside.

[0012] In some embodiments, the first communication network is a terrestrial cellular network, the terrestrial cellular network includes multiple base stations, the multiple base stations include a target base station, the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, and the target base station covers the target terrestrial cellular cell; the second communication network is a satellite network, the satellite network includes multiple satellites, the multiple satellites include a target satellite, the second communication cell is a target satellite network cell in the satellite network, the target satellite covers the target satellite network cell, and the satellite network communicates with the terrestrial cellular network through a target gateway; the method further includes: the target base station sends a neighbor update request to the satellite network through the target gateway; the target gateway receives a neighbor update response sent by the target satellite in the satellite network, the neighbor update response includes a target satellite cell identifier of the target satellite; the target gateway forwards the target satellite cell identifier sent by the target satellite to the target base station, so that the target base station uses the target satellite cell identifier as the second cell identifier of the second communication cell.

[0013] In some embodiments, the first communication network is a satellite network, the satellite network includes a plurality of satellites, the plurality of satellites includes a target satellite, the first communication cell is a target satellite network cell in the satellite network, the target satellite covers the target satellite network cell; the second communication network is a terrestrial cellular network, the terrestrial cellular network includes a plurality of base stations, the plurality of base stations includes a target base station, the second communication cell is a target terrestrial cell in the terrestrial cellular network, the target base station covers the target terrestrial cell, the satellite network communicates with the terrestrial cellular network through a target gateway station; the method further includes: the target satellite sends a neighbor cell update request to the terrestrial cellular network through the target gateway station; the target gateway station receives a neighbor cell update response sent by the target base station in the terrestrial cellular network, the neighbor cell update response includes a target base station cell identifier of the target base station; the target gateway station forwards the target base station cell identifier issued by the target base station to the target satellite, so that the target satellite takes the target base station cell identifier as a second cell identifier of the second communication cell.

[0014] The embodiment of the present disclosure provides a cell selection device, which comprises a broadcast signal receiving module, a first preset condition judging module, a second preset condition judging module and a transferring module.

[0015] The broadcast signal receiving module is configured to receive a first broadcast signal issued by the first communication cell, and the first broadcast signal carries a second cell identifier; the first preset condition judging module is configured to determine that the target device does not meet a first preset condition in the first communication cell; the second preset condition judging module is configured to determine that a second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to camp on, and the second communication cell is located in a second communication network; and the transferring module is configured to transfer the target device to the second communication cell in the second communication network for camping.

[0016] The embodiment of the present disclosure provides an electronic device, which comprises one or more processors, and a storage device configured to store one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the cell selection method in any of the above embodiments.

[0017] The embodiment of the present disclosure provides a computer readable storage medium, which stores a computer program, when the program is executed by a processor, the processor implements the cell selection method in any of the above embodiments.

[0018] The embodiment of the present disclosure provides a computer program product or a computer program, which comprises computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the cell selection method.

[0019] The cell selection method, the cell selection device, the electronic device and the computer readable storage medium provided by the embodiment of the present disclosure provide the second cell identifier through the first broadcast signal of the first communication cell, so that a communication cell which can be camped on and transferred is provided to the target device through the second cell identifier. On the other hand, the communication quality between the second communication cell and the target device is judged before the camped cell is transferred, so that the communication quality of the second communication cell can meet the second preset condition, and then the communication quality of the target device is improved after the cell is transferred. Through the above method, the target device realizes the cell switching in the two communication networks through the second cell identifier in the first broadcast signal, and the communication quality of the target device is improved through the mutual complement of the communication coverage of the two communication networks.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 A schematic diagram of an exemplary system architecture applied to the cell selection method or the cell selection device of the embodiment of the present disclosure is shown.

[0023] Figure 2 is a flowchart of the cell selection method in the exemplary embodiment of the present disclosure.

[0024] Figure 3 is a cell coverage range schematic diagram according to an exemplary embodiment.

[0025] Figure 4 is a flowchart of a cell selection method according to an exemplary embodiment.

[0026] Figure 5 is a flowchart of a cell selection method according to an exemplary embodiment.

[0027] Figure 6 is a flowchart of a neighbor cell update method according to an example embodiment.

[0028] Figure 7 is a neighbor cell update diagram according to an example embodiment.

[0029] Figure 8 is a flowchart of a cell selection method according to an example embodiment.

[0030] Figure 9 is a flowchart of a cell selection method according to an example embodiment.

[0031] Figure 10 is a flowchart of a neighbor cell update method according to an example embodiment.

[0032] Figure 11 is a flowchart of a neighbor cell update method according to an example embodiment.

[0033] Figure 12 is a block diagram of a cell selection apparatus according to an example embodiment.

[0034] Figure 13 shows a structural schematic diagram of an electronic device suitable for implementing embodiments of the present disclosure. DETAILED DESCRIPTION

[0035] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements can be omitted from the descriptions of the figures.

[0036] The features, structures, or characteristics described in connection with the present disclosure can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the techniques described herein can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

[0037] The accompanying drawings are merely schematic illustrations of the present disclosure. Identical reference numerals in the drawings denote identical or similar components, and thus their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0038] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all content and steps, nor must they be executed in the order described. For example, some steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0039] In this specification, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0040] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0041] Figure 1 A schematic diagram shows an exemplary system architecture that can be applied to the cell selection method or cell selection apparatus according to the embodiments of the present disclosure.

[0042] like Figure 1 As shown, the system architecture 100 may include terminal devices 101 and 102 , and a server 103 .

[0043] Among them, the terminal devices 101, 102 and the server 103 can communicate through a communication network.

[0044] Among them, the terminal device can be any electronic device that can communicate, including but not limited to mobile phones, tablet computers, laptop computers, desktop computers, wearable devices, virtual reality devices, smart homes, etc.

[0045] The terminal device may, for example, receive a first broadcast signal sent by a first communication cell, the first broadcast signal carrying a second cell identifier; the terminal device may, for example, determine that the target device does not meet a first preset condition in the first communication cell; the terminal device may, for example, determine that a second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside, and the second communication cell is located in a second communication network; the terminal device may, for example, transfer the target device to a second communication cell in the second communication network for residency.

[0046] The server 105 may be any service device capable of communication, such as a background management server that can communicate with the terminal devices 101 and 102 and provide support for operations performed by the terminal devices 101 and 102. The background management server may receive requests via a communication network, analyze and process the received requests and other data, and finally feed back the processing results to the terminal device via the communication network.

[0047] The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. It can also be a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), as well as basic cloud computing services such as big data and artificial intelligence platforms, etc. This disclosure does not impose any restrictions on this.

[0048] The server may, for example, receive a first broadcast signal sent by a first communication cell, the first broadcast signal carrying a second cell identifier; the server may, for example, determine that the target device does not meet a first preset condition in the first communication cell; the server may, for example, determine that a second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside, and the second communication cell is located in a second communication network; the server may, for example, transfer the target device to the second communication cell in the second communication network for residency.

[0049] It should be understood that Figure 1 The number of terminal devices, networks and servers is merely illustrative. The server 105 may be a single entity server or may be composed of multiple servers. It may have any number of terminal devices, networks and servers according to actual needs.

[0050] Figure 2 The method provided by the embodiment of the present disclosure can be executed by any electronic device with communication capability, for example, the method can be executed by the above-mentioned Figure 1 The server or terminal device in the embodiment is executed. In the following embodiments, the terminal device is used as the execution subject for example, but the present disclosure is not limited to this.

[0051] In some embodiments, the target device is communicating in a first communication cell of a first communication network.

[0052] Among them, the first communication network can be a ground-based network such as a terrestrial cellular network, a space-based network such as a satellite network, or an air-based network constructed by drones, hot air balloons, etc., and this disclosure does not impose any restrictions on this.

[0053] The first communication cell may refer to the area covered by a certain device in a communication network, such as the area covered by a base station in a terrestrial cellular network, the area covered by a satellite in a satellite network cell, or the area covered by a drone or hot air balloon in an air-based network. The present disclosure does not impose any restrictions on this.

[0054] In the first communication cell, the target device can communicate with other devices through a wireless channel.

[0055] Reference Figure 2 The cell selection method provided by the embodiment of the present disclosure may include the following steps.

[0056] Step S202: Receive a first broadcast signal sent by a first communication cell, where the first broadcast signal carries a second cell identifier.

[0057] In some embodiments, the first communication cell will send a first broadcast signal to the devices in the cell according to certain rules, such as according to a certain time period, or according to the time of an event (such as a weather event, a geographic location reminder event), etc. This disclosure does not impose any restrictions on this.

[0058] In some embodiments, the first broadcast signal may include not only information such as the network number of the first communication cell, device access configuration, etc., but also a second cell identifier.

[0059] The second cell identifier may be used to indicate a second communication cell in the second communication network. According to the second cell identifier, the target device may receive a broadcast signal sent by the second communication cell.

[0060] It should be noted that the second communication cell may be geographically adjacent to the first communication cell, for example, the closest distance between the communication edge of the first communication cell and the communication edge of the second communication cell is within a preset distance range, that is, the coverage areas of the two cells may intersect or may be separated, and the present disclosure does not impose any restrictions on this; the coverage areas of the second communication cell and the first communication cell may have a relationship of inclusion and being included, for example, the coverage area of ​​the first communication cell may be included in the coverage area of ​​the second communication cell, and the coverage area of ​​the first communication cell may also include the second communication cell.

[0061] Step S204: Determine whether the target device in the first communication cell meets a first preset condition.

[0062] In some embodiments, when the communication quality of the target device in the first communication cell is poor, it can be considered that the target device does not meet the first preset condition in the first communication cell. Specifically, it can be manifested as the signal power received by the target device in the first communication cell is lower than a certain power threshold, or it can be manifested as the signal quality received by the target device in the first communication cell is lower than a certain signal quality threshold, etc. The present disclosure does not impose any restrictions on this.

[0063] Step S206: Determine that the second communication cell corresponding to the second cell identifier meets the second preset condition for the target device to reside, and the second communication cell is located in the second communication network.

[0064] The second communication cell may refer to the area covered by a certain device in the second communication network, such as the area covered by a base station in a terrestrial cellular network, the area covered by a satellite in a satellite network cell, or the area covered by a drone or hot air balloon in an air-based network. The present disclosure does not impose any restrictions on this.

[0065] It should be noted that the second communication network may be the same communication network as the first communication network or a communication network different from the first communication network.

[0066] In this embodiment, the present disclosure will be described by taking the first communication network and the second communication network as different communication networks as an example, but the present disclosure is not limited to this.

[0067] In some embodiments, when the communication of the target device in the second communication cell indicated by the second cell identifier satisfies a second preset condition, the target device may be transferred to reside in the second communication cell.

[0068] For example, when the second communication cell satisfies the S criterion (a cell selection criterion) for the target device to reside in, the target device is transferred to reside in the second communication cell.

[0069] Step S208: The target device moves to a second communication cell in the second communication network to reside therein.

[0070] The technical solution provided by this embodiment, on the one hand, provides a second cell identifier through the first broadcast signal of the first communication cell, thereby providing the target device with a communication cell to which it can perform resident transfer through this second cell identifier; on the other hand, before the resident cell transfer, the communication quality between the second communication cell and the target device is judged so that the communication quality of the second communication cell can meet the second preset condition, thereby improving the communication quality of the target device after the cell transfer. In the above method, the target device implements cell switching between the two communication networks through the second cell identifier in the first broadcast signal, and the communication quality of the target device is improved by the mutual complementation of the communication coverage of the two communication networks.

[0071] Traditional land mobile communication networks are constrained by network deployment costs, environmental factors, and geographic location. For example, remote areas like deserts and mountainous areas are either impractical or prohibitively expensive to deploy base stations, resulting in a lack of global, seamless coverage. Furthermore, traditional land mobile communication networks are significantly impacted by natural disasters, which can also cause gaps in operators' network coverage.

[0072] Satellite communications have the characteristics of wide coverage and little influence from geographical environment. They can serve as a supplement to terrestrial cellular networks to provide seamless global coverage.

[0073] In some embodiments, terrestrial mobile communication networks and satellite networks will be highly integrated, forming a trend of space-ground integration. When selecting a cell, the target device can consider both the terrestrial cellular network and the satellite network, changing the current situation where the two networks are selected independently.

[0074] The technical solution provided in this embodiment can enable the two network coverages to complement each other in an integrated air-space-ground scenario. The cellular network can guide the terminal to reside in the cell provided by the satellite network, and vice versa.

[0075] In some embodiments, the air-ground integrated cell selection network architecture can be as follows Figure 3 shown. Figure 3 The figure is a schematic diagram showing a cell coverage area according to an exemplary embodiment.

[0076] like Figure 3 As shown, the coverage of satellite cell service links is larger than that of terrestrial cellular cells, and can supplement and enhance areas with no coverage or weak coverage of terrestrial cellular networks.

[0077] The satellite gateway (e.g., a gateway or earth station in a satellite communications network that relays signals) and the anchor base station (a designated base station in a terrestrial cellular network that connects to the satellite gateway) are connected via a wired interface, called the BG interface. The BG interface allows for the exchange of PCIs (cell identifiers) between the terrestrial cellular network and the satellite network.

[0078] Finally, the terrestrial cellular cells and satellite cells add each other's cell PCI information in the broadcast message.

[0079] In some embodiments, the first communication network may be a terrestrial cellular network, the first communication cell may be a target terrestrial cellular cell in the terrestrial cellular network, the second communication network may be a satellite network, and the second communication cell may be a target satellite network cell in the satellite network.

[0080] Figure 4 The figure is a flowchart of a cell selection method according to an exemplary embodiment.

[0081] Step S402: Receive a first broadcast signal sent by a target terrestrial cellular cell, where the first broadcast signal carries a second cell identifier.

[0082] The second cell identification message may be included in the neighbor cell list set in the SIB3 (a broadcast signal) and SIB4 (a broadcast signal) messages, but needs to be specifically indicated as satellite cell PCI information.

[0083] Step S404: If the received signal power of the first broadcast signal received by the target device is less than the first preset power threshold, it is determined that the target device does not meet the first preset condition in the target terrestrial cellular cell.

[0084] Step S406: Receive a second broadcast signal sent by the target satellite network cell according to the second cell identifier.

[0085] Step S408: If the received signal power of the second broadcast signal received by the target device is greater than the second preset power, it is determined that the target satellite network cell meets the second preset condition for the target device to reside.

[0086] Step S410: The target device moves to a target satellite network cell in the satellite network to reside therein.

[0087] The above cell selection method can be specifically as follows: Figure 5 The embodiment shown.

[0088] Figure 5 FIG. 1 is a flow chart showing a cell selection method according to an exemplary embodiment. Figure 5 , the above-mentioned cell selection method may include the following steps.

[0089] Step S501: The terrestrial cellular network sends a first broadcast signal, where the first broadcast signal includes an identifier of a target satellite cell in a satellite network.

[0090] Step S502: The target device monitors the first broadcast signal and parses the target satellite cell identifier in the satellite network.

[0091] Step S503: It is determined whether the received signal power of the first broadcast signal sent by the target device from the resident cell in the terrestrial cellular network is lower than a certain threshold.

[0092] Step S504: measuring the target satellite network cell in the satellite network indicated by the satellite cell identifier.

[0093] Step S505: The received signal power of the second broadcast signal received by the target device from the target satellite network cell is greater than a second preset power value.

[0094] Step S506: The target device resides in the target satellite network cell and sends auxiliary information to the AMF.

[0095] Step S507, end.

[0096] Figure 5 The process shown can be specifically described as follows: the target device periodically monitors the broadcast message containing the satellite network PCI in the terrestrial cellular network and parses the PCI information of the satellite network. The message can be included in the neighbor cell list of the SIB3 and SIB4 messages, but needs to be specifically indicated as the satellite cell PCI information; when the RSRP value (RSRP is an absolute value indicating the received signal strength, which can reflect the distance between the mobile station and the base station to a certain extent) of the target device's camped cell broadcast signal is lower than a certain threshold, the target device measures the satellite cell indicated by the satellite network PCI; when the RSRP value of the camped cell broadcast signal of the target device is lower than the threshold TH1, the target device measures the cell indicated by the satellite network PCI; if the RSRP channel quality of the cell indicated by the satellite network PCI meets a certain threshold, the target device camps on the target satellite cell indicated by the satellite network PCI and sends a camp assistance message to the AMF (Access and Mobility Management Function) to instruct the target device to camp on the satellite network.

[0097] This disclosure proposes a cell selection method based on integrated air-ground-space connectivity. Terrestrial cellular cells broadcast the PCI of satellite network cells, guiding terminals with poor coverage to access satellite network cells. This disclosure uses satellite networks as a supplement to terrestrial cellular network coverage. When terrestrial cellular network coverage is poor, a secondary cell identifier in the broadcast signal from the cellular network can be used to reside on the satellite network, improving communication quality for mobile devices.

[0098] In some embodiments, the second cell identifier carried in the first broadcast signal sent by the target terrestrial cellular cell can be predicted in advance based on the ephemeris information of each satellite in the satellite network. For example, the target satellite cell that may be close to the target terrestrial cellular cell at the current moment can be predicted based on the ephemeris information in the satellite network, and then the cell identifier of the target satellite cell can be used as the second cell identifier.

[0099] In some other embodiments, it is also possible to Figure 6 or Figure 7 The illustrated embodiment determines the second cell identifier carried in the first broadcast signal.

[0100] Figure 6 The present invention is a flowchart of a method for updating a neighboring cell according to an exemplary embodiment.

[0101] In some embodiments, the first communication network may be a terrestrial cellular network, which includes multiple base stations, which include a target base station, and the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, and the target base station may cover the target terrestrial cellular cell; the second communication network is a satellite network, which includes multiple satellites, which include a target satellite, and the second communication cell is a target satellite network cell in the satellite network, and the target satellite covers the target satellite network cell, and the satellite network communicates with the terrestrial cellular network through a target gateway.

[0102] refer to Figure 6 , the above-mentioned neighboring cell updating method may include the following steps.

[0103] Step 602: The target base station sends a neighbor update request to the satellite network through the target gateway.

[0104] like Figure 7 As shown, the target base station 701 can send a neighboring cell update request to the target satellite 703 through the base station 702 (i.e., the anchor base station) connected to the ground gateway. Specifically, it may include: the base station 702 (i.e., the anchor base station) connected to the ground gateway sends a neighboring cell update request to the target gateway. When the target gateway receives the neighboring cell update request sent by the target base station, it will send the neighboring cell update request to the satellite network, so that the target satellite 703 near the gateway in the satellite network receives and responds to the neighboring cell update request.

[0105] The target satellite may be located near the target gateway station and connect and communicate with the target gateway station.

[0106] Step S604: The target gateway receives a neighbor update response sent by a target satellite in the satellite network. The neighbor update response includes a target satellite cell identifier of the target satellite.

[0107] In step S606, the target gateway forwards the target satellite cell identifier sent by the target satellite to the target base station, so that the target base station uses the target satellite cell identifier as the second cell identifier of the second communication cell.

[0108] The aforementioned neighbor cell update process may specifically include: the target base station sends a neighbor cell update request message to a base station connected to a satellite ground gateway via an Xn interface (an interface for communication between base stations); the base station connected to the satellite ground gateway sends a neighbor cell update request to the target satellite via a BG interface; the target satellite sends a PCI update list to the base station connected to the satellite ground gateway via the BG interface; and the base station connected to the satellite ground gateway sends a satellite PCI list to the base station via the Xn interface. The satellite PCI list may include cell identifiers of satellite cells adjacent to the target terrestrial cell.

[0109] That is, if the base station needs to add satellite cells to enhance coverage, it can send a neighbor cell update request message to the base station connected to the satellite ground gateway through the Xn interface; the base station connected to the satellite ground gateway sends a neighbor cell update request to the satellite through the BG interface; the satellite sends the PCI update list to the base station connected to the satellite ground gateway through the BG interface; the PCI list can be configured with the PCIs of multiple satellites based on the ephemeris information, so that when a satellite moves out of the coverage range, other satellite neighboring cells can still be found; the base station connected to the satellite ground gateway sends the satellite PCI list to the base station through the Xn interface.

[0110] The disclosed embodiments propose an update mechanism for changes in neighboring cell relationships between terrestrial cellular networks and satellite networks, thereby enabling real-time addition, deletion, and modification of neighboring cells.

[0111] This disclosure proposes a real-time neighbor cell update mechanism to address the problem of changes in neighbor cell relationships caused by high-speed satellite movement.

[0112] Figure 8 The figure is a flowchart of a cell selection method according to an exemplary embodiment.

[0113] In some embodiments, the first communication network may be a satellite network, the first communication cell may be a target satellite network cell in the satellite network, the second communication network may be a terrestrial cellular network, and the second communication cell may be a target terrestrial cellular cell in the terrestrial cellular network.

[0114] refer to Figure 8 , the above-mentioned cell selection method may include the following steps.

[0115] Step S802: Receive a first broadcast signal sent by a target satellite network cell, where the first broadcast signal carries a second cell identifier.

[0116] Step S804: Acquire the location information of the target device.

[0117] Step S806: If it is determined according to the location information of the target device that the target device is located within the coverage of the target terrestrial cellular cell, it is determined that the target device does not meet the first preset condition in the target satellite network cell.

[0118] Step S808: Receive a third broadcast signal sent by a target terrestrial cellular cell in the terrestrial cellular network according to the second cell identifier.

[0119] Step S810: If the received signal power of the third broadcast signal received by the target device is greater than the third preset power, it is determined that the target terrestrial cell meets the second preset condition for the target device to reside.

[0120] Step S812: The target device is transferred to a target terrestrial cellular cell in the terrestrial cellular network to reside therein.

[0121] The disclosed embodiment triggers cell reselection from a satellite network to a terrestrial cellular network based on terminal location information, and triggers measurement and cell reselection processes on the terrestrial cellular network when the terminal moves near the terrestrial cellular network.

[0122] Figure 8 The embodiment shown can be specifically Figure 9 The process shown.

[0123] Step S901: The satellite network broadcasts the cell identifier in the terrestrial cellular network.

[0124] Step S902: The target device monitors and parses the cell identifier in the terrestrial cellular network.

[0125] Step S903: Whether the target device is located near a land cellular network.

[0126] Step S904: measuring the cell indicated by the cell identifier of the terrestrial cellular network.

[0127] Step S905: Check whether the terrestrial cellular network meets the residency conditions.

[0128] Step S906: camp on the terrestrial cellular cell and send auxiliary information to the AMF.

[0129] Step S907, end.

[0130] Figure 9The illustrated embodiment may be specifically as follows: the target device periodically monitors the broadcast message containing the PCI of the terrestrial cellular network in the satellite network, and parses the PCI information of the terrestrial cellular network. The message may be included in the neighboring cell list of the SIB3 and SIB4 messages, but needs to be specifically indicated as the PCI information of the terrestrial cellular cell; based on the location information of the target device, when the target device moves near the cellular network, it triggers measurement of the cell indicated by the PCI of the terrestrial cellular network. For example, when the distance between the location information of the target device and the nearest terrestrial cellular network base station is less than the threshold R, it triggers measurement of the cell indicated by the PCI of the terrestrial cellular network; if the cell indicated by the PCI of the cellular network meets the residency condition (S criterion), the target device resides in the terrestrial cellular network and sends a residency assistance message to the AMF, instructing the AMF target device to reside in the terrestrial cellular network so as to send a paging message in the terrestrial cellular cell.

[0131] This disclosure proposes a cell selection method based on integrated air-ground and space capabilities. Satellite cells broadcast the PCI of cellular network cells to guide terminals to cellular network cells with better signal quality. Specifically, satellite network cells can guide terminals to terrestrial cellular network cells based on terminal measurement reports and location information.

[0132] In some embodiments, the second cell identifier carried in the first broadcast signal sent by the target satellite cell can be predicted in advance based on the ephemeris information of each satellite in the satellite network. For example, the target land cellular cell that may be close to the target satellite cell at the current moment can be predicted based on the ephemeris information in the satellite network, and then the cell identifier of the target land cellular cell can be used as the second cell identifier.

[0133] In some other embodiments, it is also possible to Figure 10 or Figure 11 The illustrated embodiment determines the second cell identifier carried in the first broadcast signal.

[0134] Figure 10 The present invention is a flowchart of a method for updating a neighboring cell according to an exemplary embodiment.

[0135] In some embodiments, the first communication network is a satellite network, the satellite network includes multiple satellites, the multiple satellites include a target satellite, the first communication cell is a target satellite network cell in the satellite network, and the target satellite covers the target satellite network cell; the second communication network is a terrestrial cellular network, the terrestrial cellular network includes multiple base stations, the multiple base stations include a target satellite, the second communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the target satellite covers the target terrestrial cellular cell, and the satellite network communicates with the terrestrial cellular network through a target gateway.

[0136] refer to Figure 10 , the above-mentioned neighboring cell updating method may include the following steps.

[0137] At step S1002, the target satellite sends a neighbor cell update request to the terrestrial cellular network through the target gateway station.

[0138] As shown in FIG. 11, the target satellite 1101 can send a neighbor cell update request to the target base station 1103 through the base station 1102 (i.e., anchor base station) connected with the ground gateway station, which can specifically include that the target satellite sends a neighbor cell update request to the target gateway station, and when the target gateway station receives the neighbor cell update request sent by the target satellite, the target gateway station sends the neighbor cell update request to the terrestrial cellular network, so that the base station 1102 connected with the target gateway station sends the neighbor cell update request to the target base station close to the target gateway station, so that the target base station gives a response. Figure 11 At step S1004, the target gateway station receives a neighbor cell update response sent by the target base station in the terrestrial cellular network, and the neighbor cell update response includes a target base station cell identifier of the target base station.

[0139] At step S1006, the target gateway station forwards the target base station cell identifier issued by the target base station to the target satellite, so that the target satellite takes the target base station cell identifier as a second cell identifier of a second communication cell.

[0140] In the embodiments of the present disclosure, the PCI broadcast by the satellite is bound with the satellite, so that the neighbor relationship between the terrestrial cellular network and the satellite network changes with the movement of the satellite. In some embodiments, the second cell identifier in the satellite broadcast can be updated by using the following embodiments.

[0141] The above neighbor cell update process can be specifically as follows: first, the satellite sends a neighbor cell update request to the base station connected with the satellite ground gateway station through the BG interface; second, the base station connected with the satellite ground gateway station sends a neighbor cell update request message through the Xn interface; then, the terrestrial cellular base station that needs to update the PCI of the satellite responds to the neighbor cell update request message to the base station connected with the satellite ground gateway station; finally, the base station connected with the satellite ground gateway station sends a neighbor cell update list to the satellite through the BG interface. The neighbor cell update list includes neighbor cell PCI addition, deletion and modification.

[0142]

[0143] ​That is, the PCI broadcast by the satellite is bound to the satellite, so as the satellite moves, the neighboring relationship between the terrestrial cellular network and the satellite network will change. When the satellite moves to a new area and needs to update its terrestrial cellular neighboring cells, the satellite sends a neighboring cell update request to the base station connected to the satellite ground gateway through the BG interface. The base station connected to the satellite ground gateway receives the neighboring cell update request and sends a neighboring cell update request message to the nearby base station through the Xn interface. The terrestrial cellular base station that needs to update the PCI of its cell in the satellite responds to the neighboring cell update request message to the base station connected to the satellite ground gateway. The base station connected to the satellite ground gateway collects the neighboring cell update responses from the neighboring cell base stations, packages them and sends the neighboring cell update list to the satellite through the BG interface. The neighboring cell update list includes the addition, deletion and modification of the neighboring cell PCI.

[0144] The disclosed embodiments propose an update mechanism for changes in neighbor relationships between terrestrial cellular networks and satellite networks, enabling real-time addition, deletion, and modification of neighbor cells. That is, a real-time neighbor update mechanism is proposed to address the problem of changes in neighbor relationships caused by high-speed satellite movement.

[0145] Figure 12 A block diagram of a cell selection device according to an exemplary embodiment is shown. Figure 12 The cell selection device 1200 provided in the embodiment of the present disclosure may include: a broadcast signal receiving module 1201, a first preset condition judgment module 1202, a second preset condition judgment module 1203 and a communication transfer module 1204.

[0146] Among them, the broadcast signal receiving module 1201 can be used to receive the first broadcast signal sent by the first communication cell, and the first broadcast signal carries the second cell identifier; the first preset condition judgment module 1202 can be used to determine that the target device does not meet the first preset condition in the first communication cell; the second preset condition judgment module 1203 can be used to determine that the second communication cell corresponding to the second cell identifier meets the second preset condition for the target device to reside, and the second communication cell is located in the second communication network; the communication transfer module 1204 can be used to transfer the target device to the second communication cell in the second communication network for residence.

[0147] In some embodiments, the first communication network is a terrestrial cellular network, the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the second communication network is a satellite network, and the second communication cell is a target satellite network cell in the satellite network; wherein, the first preset condition judgment module 1202 may include: a signal power judgment unit.

[0148] The signal power judgment unit may be configured to determine that the target device does not meet a first preset condition in the target terrestrial cellular cell if the received signal power of the first broadcast signal received by the target device is less than a first preset power threshold.

[0149] In some embodiments, the second preset condition determination module 1203 may include: a second broadcast signal receiving unit and a second signal power determination unit.

[0150] Among them, the second broadcast signal receiving unit can be used to receive the second broadcast signal sent by the target satellite network cell according to the second cell identifier; the second signal power judgment unit can be used to determine that the target satellite network cell meets the second preset condition for the target device to reside if the received signal power of the second broadcast signal received by the target device is greater than the second preset power.

[0151] In some embodiments, the first communication network is a satellite network, the first communication cell is a target satellite network cell in the satellite network, the second communication network is a terrestrial cellular network, and the second communication cell is a target terrestrial cellular cell in the terrestrial cellular network; wherein, the first preset condition judgment module 1202 may include: a location information acquisition unit and a location judgment unit.

[0152] Among them, the location information acquisition unit can be used to obtain the location information of the target device; the location judgment unit can be used to determine that the target device does not meet the first preset condition in the target satellite network cell if it is determined that the target device is within the coverage range of the target terrestrial cellular cell based on the location information of the target device.

[0153] In some embodiments, the second preset condition determination module 1203 may include: a third signal receiving unit and a third signal power determination unit.

[0154] Among them, the third signal receiving unit can be used to receive the third broadcast signal sent by the target terrestrial cellular cell in the terrestrial cellular network according to the second cell identifier; the third signal power judgment unit can be used to determine that the target terrestrial cellular cell meets the second preset condition for the target device to reside if the received signal power of the third broadcast signal received by the target device is greater than the third preset power.

[0155] In some embodiments, the first communication network is a terrestrial cellular network, the terrestrial cellular network includes multiple base stations, the multiple base stations include a target base station, the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, and the target base station covers the target terrestrial cellular cell; the second communication network is a satellite network, the satellite network includes multiple satellites, the multiple satellites include a target satellite, the second communication cell is a target satellite network cell in the satellite network, the target satellite covers the target satellite network cell, and the satellite network communicates with the terrestrial cellular network through a target gateway; wherein, the cell selection device 1200 may further include: a first neighboring cell update request sending module, a first neighboring cell update corresponding module, and a target satellite cell identifier sending module.

[0156] Among them, the first neighboring cell update request sending module can be used by the target base station to send a neighboring cell update request to the satellite network through the target gateway station; the first neighboring cell update response module can be used by the target gateway station to receive the neighboring cell update response sent by the target satellite in the satellite network, and the neighboring cell update response includes the target satellite cell identifier of the target satellite; the target satellite cell identifier sending module can be used by the target gateway station to forward the target satellite cell identifier sent by the target satellite to the target base station, so that the target base station uses the target satellite cell identifier as the second cell identifier of the second communication cell.

[0157] In some embodiments, the first communication network is a satellite network, the satellite network includes multiple satellites, the multiple satellites include a target satellite, the first communication cell is a target satellite network cell in the satellite network, and the target satellite covers the target satellite network cell; the second communication network is a terrestrial cellular network, the terrestrial cellular network includes multiple base stations, the multiple base stations include a target base station, the second communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the target base station covers the target terrestrial cellular cell, and the satellite network communicates with the terrestrial cellular network through a target gateway; wherein, the cell selection device 1200 may further include: a second neighboring cell update request sending module, a second neighboring cell update corresponding module and a target base station cell identifier sending module.

[0158] Among them, the second neighboring cell update request sending module can be used for the target satellite to send a neighboring cell update request to the terrestrial cellular network through the target gateway station; the second neighboring cell update response module can be used for the target gateway station to receive the neighboring cell update response sent by the target base station in the terrestrial cellular network, and the neighboring cell update response includes the target base station cell identifier of the target base station; the target base station cell identifier sending module can be used for the target gateway station to forward the target base station cell identifier sent by the target base station to the target satellite, so that the target satellite uses the target base station cell identifier as the second cell identifier of the second communication cell.

[0159] Since the functions of the apparatus 1200 have been described in detail in the corresponding method embodiments, they will not be described in detail herein.

[0160] The modules and / or units involved in the embodiments of the present application can be implemented by software or by hardware. The described modules and / or units can also be arranged in a processor. In some cases, the names of these modules and / or units do not constitute a limitation on the modules and / or units themselves.

[0161] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a portion of code that contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in a different order than that shown in the drawings. For example, two blocks that are shown in succession can actually be executed substantially concurrently, or they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams or flowcharts, and combinations of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs specified functions or operations, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0162] In addition, the above-described drawings are only schematic representations of the processes included in the method according to the exemplary embodiments of the present disclosure, and are not intended to limit the purposes. It is readily understood that the processes shown in the above-described drawings do not indicate or limit the time sequence of the processes. In addition, it is readily understood that the processes can be executed synchronously or asynchronously, for example, in multiple modules.

[0163] Figure 13 A structural schematic of an electronic device suitable for implementing the embodiments of the present disclosure is shown. It should be noted that, Figure 13 The electronic device 1300 shown is only an example, and should not limit the functions and use range of the embodiments of the present disclosure.

[0164] As Figure 13 shown, the electronic device 1300 includes a central processing unit (CPU) 1301, which can perform various appropriate actions and processes according to programs stored in a read-only memory (ROM) 1302 or programs loaded from a storage portion 1308 into a random access memory (RAM) 1303. In the RAM 1303, various programs and data required for the operation of the electronic device 1300 are also stored. The CPU 1301, the ROM 1302, and the RAM 1303 are connected to each other through a bus 1304. An input / output (I / O) interface 1305 is also connected to the bus 1304.

[0165] The following components are connected to the I / O interface 1305: an input part 1306 including a keyboard, a mouse, etc.; an output part 1307 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage part 1308 including a hard disk, etc.; and a communication part 1309 including a network interface card such as a LAN card, a modem, etc. The communication part 1309 performs communication processing via a network such as the Internet. A drive 1310 is also connected to the I / O interface 1305 as necessary. A removable media 1311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 1310 as necessary, so that a computer program read out therefrom is installed in the storage part 1308 as necessary.

[0166] In particular, the processes described above with reference to the flowcharts can be implemented as a computer software program according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer-readable storage medium, the computer program containing program code for executing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network by the communication part 1309, and / or installed from the removable media 1311. When the computer program is executed by the central processing unit (CPU) 1301, the above-described functions defined in the system of the present application are executed.

[0167] It should be noted that the computer-readable storage medium shown in the present disclosure can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. This propagated data signal can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable storage medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. Program code contained on a computer-readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wireline, optical cable, RF, or any suitable combination thereof.

[0168] As another aspect, the present application also provides a computer-readable storage medium, which may be included in the device described in the above embodiment; or it may exist independently without being assembled into the device. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed by a device, the device can implement functions including: receiving a first broadcast signal sent by the first communication cell, the first broadcast signal carrying a second cell identifier; determining that the target device does not meet a first preset condition in the first communication cell; determining that the second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside, and the second communication cell is located in a second communication network; the target device is transferred to the second communication cell in the second communication network for residency.

[0169] According to one aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in various optional implementations of the above-described embodiments.

[0170] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for enabling a computing device (which can be a personal computer, a server, a mobile terminal, or a smart device, etc.) to execute the method according to the embodiment of the present disclosure, for example Figure 2 Steps shown.

[0171] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the claims.

[0172] It should be understood that the present disclosure is not limited to the detailed structures, drawings or implementations shown herein, but rather is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A cell selection method, characterized in that: The target device communicates in a first communication cell of a first communication network, a broadcast message of the first communication network includes a second cell identifier for indicating a second cell geographically adjacent to the first communication cell in a second communication network, and the method includes: receiving a first broadcast signal sent by the first communication cell, the first broadcast signal carrying a second cell identifier; and determining that the target device does not meet a first preset condition in the first communication cell; performing measurement on a second communication cell indicated by the second cell identifier according to the second cell identifier; Determining that a second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside, and the second communication cell is located in a second communication network; The target device is transferred to the second communication cell in the second communication network to reside therein; Among them, when the first communication network is a terrestrial cellular network, the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the second communication network is a satellite network, the second communication cell is a target satellite network cell in the satellite network, and the second cell identifier is a target satellite network cell identifier.

2. The method according to claim 1, characterized in that Wherein, determining that the target device does not meet the first preset condition in the first communication cell includes: If the received signal power of the first broadcast signal received by the target device is less than a first preset power threshold, it is determined that the target device does not meet the first preset condition in the target terrestrial cellular cell.

3. The method according to claim 2, characterized in that Determining that the second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside includes: receiving a second broadcast signal sent by the target satellite network cell according to the second cell identifier; If the received signal power of the second broadcast signal received by the target device is greater than a second preset power, it is determined that the target satellite network cell meets a second preset condition for the target device to reside.

4. The method according to claim 1, characterized in that When the first communication network is a satellite network, the first communication cell is a target satellite network cell in the satellite network, and the second communication network is a terrestrial cellular network, the second communication cell is a target terrestrial cellular cell in the terrestrial cellular network; wherein determining that the target device does not meet a first preset condition in the first communication cell includes: Obtaining location information of the target device; If it is determined according to the location information of the target device that the target device is located within the coverage of the target terrestrial cellular cell, it is determined that the target device does not meet the first preset condition in the target satellite network cell.

5. The method according to claim 4, characterized in that: Determining that the second communication cell corresponding to the second cell identifier meets a second preset condition for the target device to reside includes: receiving, according to the second cell identifier, a third broadcast signal sent by a target terrestrial cellular cell in the terrestrial cellular network; If the received signal power of the third broadcast signal received by the target device is greater than a third preset power, it is determined that the target terrestrial cell meets the second preset condition for the target device to reside.

6. The method according to claim 1, characterized in that The terrestrial cellular network includes a plurality of base stations, the plurality of base stations include a target base station, and the target base station covers the target terrestrial cellular cell; the satellite network includes a plurality of satellites, the plurality of satellites include a target satellite, and the target satellite covers the target satellite network cell; the satellite network communicates with the terrestrial cellular network through a target gateway; The method further comprises: The target base station sends a neighbor update request to the satellite network through the target gateway; The target gateway receives a neighbor update response sent by a target satellite in the satellite network, where the neighbor update response includes a target satellite cell identifier of the target satellite; The target gateway forwards the target satellite cell identifier sent by the target satellite to the target base station, so that the target base station uses the target satellite cell identifier as the second cell identifier of the second communication cell.

7. The method according to claim 1, characterized in that The first communication network is a satellite network, the satellite network includes a plurality of satellites, the plurality of satellites include a target satellite, the first communication cell is a target satellite network cell in the satellite network, and the target satellite covers the target satellite network cell; The second communication network is a terrestrial cellular network, the terrestrial cellular network includes a plurality of base stations, the plurality of base stations include a target base station, the second communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the target base station covers the target terrestrial cellular cell, and the satellite network communicates with the terrestrial cellular network through a target gateway; The method further comprises: The target satellite sends a neighbor update request to the terrestrial cellular network through the target gateway; The target gateway receives a neighboring cell update response sent by a target base station in the terrestrial cellular network, where the neighboring cell update response includes a target base station cell identifier of the target base station; The target gateway forwards the target base station cell identifier sent by the target base station to the target satellite, so that the target satellite uses the target base station cell identifier as the second cell identifier of the second communication cell.

8. The method according to claim 1, characterized in that: The second cell identifier is a target satellite network cell identifier of a target satellite network cell that may be adjacent to the target terrestrial cellular cell at the current moment and is predicted in advance based on the ephemeris information of each satellite in the satellite network.

9. A cell selection device, characterized in that: The target device communicates in a first communication cell of a first communication network, and a broadcast message of the first communication network includes a second cell identifier for indicating a second cell in a second communication network that is geographically adjacent to the first communication cell; The cell selection device includes: a broadcast signal receiving module, configured to receive a first broadcast signal sent by the first communication cell, where the first broadcast signal carries a second cell identifier; a first preset condition judgment module, configured to, when determining that the target device does not meet the first preset condition in the first communication cell, measure the second communication cell indicated by the second cell identifier according to the second cell identifier; a second preset condition judgment module, configured to determine that a second communication cell corresponding to the second cell identifier satisfies a second preset condition for the target device to reside, and that the second communication cell is located in a second communication network; A transfer module, configured to transfer the target device to the second communication cell in the second communication network for residency; Among them, when the first communication network is a terrestrial cellular network, the first communication cell is a target terrestrial cellular cell in the terrestrial cellular network, the second communication network is a satellite network, the second communication cell is a target satellite network cell in the satellite network, and the second cell identifier is a target satellite network cell identifier.

10. The device according to claim 9, characterized in that: The second cell identifier is a target satellite network cell identifier of a target satellite network cell that may be adjacent to the target terrestrial cellular cell at the current moment and is predicted in advance based on the ephemeris information of each satellite in the satellite network.

11. An electronic device, characterized in that: include: Memory; as well as A processor coupled to the memory, the processor being configured to execute the method according to any one of claims 1 to 8 based on instructions stored in the memory.

12. A computer-readable storage medium having a program stored thereon, wherein when the program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

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