Group Handover Method and Device for Space-Ground Integrated Network

Abstract

The present application proposes a group handover method for a space-ground integrated network, including: in the space-ground integrated network, if a high-speed moving vehicle enters a specific area, the vehicle-mounted router selects a satellite service terminal group from the existing groups, and cooperates with the space-ground integrated router to switch the satellite service terminal group from the original terrestrial network to the target satellite network as a whole; if the vehicle leaves the specific area, the vehicle-mounted router cooperates with the space-ground integrated router to switch the satellite service terminal group to the target terrestrial base station as a whole; when the movement of the target satellite base station serving the satellite service terminal group triggers the inter-satellite handover condition, the space-ground integrated router determines a new target satellite base station, and then through the cooperation of the vehicle-mounted router and the space-ground integrated router, the satellite service terminal group is switched to the new target satellite base station as a whole. The present application adopting the above solution solves the problems of service quality and communication continuity under the limited communication capacity and bandwidth of terrestrial base stations in mountainous areas, suburbs, etc. for high-speed moving vehicles.

Description

Technical Field

[0001] This application relates to the field of mobile communication technologies, and in particular, to a group handover method and apparatus for a satellite-terrestrial integrated network. Background Art

[0002] Terminal communication on high-speed moving vehicles is an important scenario in wireless mobile communication. Taking high-speed trains as an example, there are a large number of terminals on high-speed trains, which are relatively concentrated in location and move together, and the terminal services have the characteristics of diversity and high traffic. Currently, on-vehicle routers are usually deployed on the car body of high-speed moving vehicles to achieve network access and communication services for in-vehicle terminals, and group handover technology is used to reduce the signaling overhead of a large number of terminal handovers in the vehicle. However, when a high-speed moving vehicle passes through areas with a low density of ground base stations, such as mountainous areas and suburbs, the sparse ground base stations cannot provide sufficient communication capacity and bandwidth, and it is difficult to ensure the service quality and communication continuity of in-vehicle terminals. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, the first objective of this application is to propose a group handover method for a satellite-terrestrial integrated network, which solves the problems of service quality and communication continuity of high-speed moving vehicles under limited communication capacity and bandwidth of ground base stations in mountainous areas, suburbs, etc.

[0005] The second objective of this application is to propose a group handover apparatus for a satellite-terrestrial integrated network.

[0006] The third objective of this application is to propose a computer device.

[0007] The fourth objective of this application is to propose a non-transitory computer-readable storage medium.

[0008] To achieve the above object, an embodiment of the first aspect of the present application provides a group handover method for a satellite-terrestrial integrated network, including: detecting the state of a high-speed moving vehicle through a vehicle-mounted router, where the state of the high-speed moving vehicle includes: entering a specific area and leaving a specific area, and the specific area is an area where the base station density is less than a threshold and the communication capacity and bandwidth are limited; if the state of the high-speed moving vehicle is entering the specific area, screening out a satellite service terminal group from the existing groups through the vehicle-mounted router, and then collaborating with a satellite-terrestrial integrated router through the vehicle-mounted router to switch the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole; if the state of the high-speed moving vehicle is leaving the specific area, collaborating with the satellite-terrestrial integrated router through the vehicle-mounted router to switch the satellite service terminal group to the target terrestrial base station as a whole; after switching the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole, it further includes: when the first target satellite base station serving the satellite service terminal group triggers an inter-satellite handover condition, determining a second target satellite base station based on the satellite service terminal group requirements and satellite base station information through the satellite-terrestrial integrated router, and then collaborating with the satellite-terrestrial integrated router through the vehicle-mounted router to switch the satellite service terminal group to the second target satellite base station as a whole.

[0009] In the group handover method of the satellite-terrestrial integrated network according to the embodiment of the present application, on a high-speed moving vehicle, a satellite-terrestrial integrated router supporting terrestrial-satellite integrated communication is proposed to be set up. Through cooperation with the original vehicle-mounted router, a group handover control method for satellite-terrestrial network integration during the movement of a high-speed moving vehicle is realized. Corresponding functional modules and devices are further designed to solve the problems of service quality and communication continuity under limited communication capacity and bandwidth of terrestrial base stations in mountainous areas, suburbs, etc. for high-speed moving vehicles.

[0010] Optionally, in an embodiment of the present application, switching the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole is specifically:

[0011] Interacting with the existing terminal groups through the vehicle-mounted router to obtain terminal group information, screening out the satellite service terminal group according to the satellite base station network parameters, available resources of the satellite base station, and terminal group service requirements, and then sending a migration preparation message carrying the terminal group information to the satellite-terrestrial integrated router through the vehicle-mounted router;

[0012] Receiving the migration preparation message carrying the terminal group information sent by the vehicle-mounted router at the satellite-terrestrial integrated router end, and then using the satellite-terrestrial integrated router to determine the first target satellite base station;

[0013] Sending a relocation request message to the determined first target satellite base station through the satellite-terrestrial integrated router, and then receiving a relocation request confirmation message sent by the first target satellite base station at the satellite-terrestrial integrated router end;

[0014] Encapsulate the data packets of the satellite service terminal group with an external IP header through the satellite-ground integrated router based on the tunnel protocol;

[0015] Send a migration preparation confirmation message to the vehicle-mounted router through the satellite-ground integrated router, and send a migration execution message to the first target satellite base station;

[0016] Receive the migration execution confirmation message sent by the first target satellite base station at the satellite-ground integrated router end to complete the handover process.

[0017] Optionally, in an embodiment of the present application, switching the entire satellite service terminal group to the target terrestrial base station specifically includes:

[0018] Send a migration preparation message to the target terrestrial base station through the vehicle-mounted router;

[0019] Receive the migration preparation message at the target terrestrial base station end, and then send a migration preparation confirmation message to the satellite-ground integrated router;

[0020] Send a migration start message sent by the vehicle-mounted router to the satellite-ground integrated router;

[0021] Receive the migration preparation confirmation message and the migration start message at the satellite-ground integrated router end, and then send an out-migration request message to the original satellite base station;

[0022] Receive the out-migration request message at the original satellite base station end, and then send an out-migration request confirmation message to the satellite-ground integrated router;

[0023] Receive the out-migration request confirmation message at the satellite-ground integrated router end, and then send a migration start confirmation message to the vehicle-mounted router;

[0024] Receive the migration start confirmation message at the vehicle-mounted router end, and then send a migration execution message to the target terrestrial base station;

[0025] Receive the migration execution message at the target terrestrial base station end, and perform the migration, and then send a migration execution confirmation message to the vehicle-mounted router to complete the handover process.

[0026] Optionally, in an embodiment of the present application, switching the entire satellite service terminal group to the second target satellite base station specifically includes:

[0027] Send a handover request message to the second target satellite base station through the satellite-ground integrated router;

[0028] Receive the handover request message at the second target satellite base station end, and then send a handover request confirmation message to the satellite-ground integrated router;

[0029] Receive a handover request confirmation message at the satellite-terrestrial integrated router, and then send a terminal information update request message to the vehicle-mounted router;

[0030] Receive a terminal request update message at the vehicle-mounted router, then interact with the satellite service terminal group, and then update the terminal group information. After that, send a terminal information update request confirmation message to the satellite-terrestrial integrated router, where the terminal information update request confirmation message carries the real-time location information of the terminal;

[0031] Receive a terminal information update request confirmation message at the satellite-terrestrial integrated router, and then send a handover preparation message to the first target base station;

[0032] Receive a handover preparation message at the first target base station, then release resources, and send a handover preparation confirmation message to the satellite-terrestrial integrated router;

[0033] Send a handover execution message to the second target satellite base station at the satellite-terrestrial integrated router;

[0034] Receive a handover execution message at the second target base station, then perform the handover, and send a handover execution confirmation message to the satellite-terrestrial integrated router to complete the handover process.

[0035] To achieve the above object, an embodiment of the second aspect of the present invention proposes a group handover device for a satellite-terrestrial integrated network, including a vehicle-mounted router and a satellite-terrestrial integrated router, where

[0036] The vehicle-mounted router is used to detect the state of a high-speed moving vehicle and screen out a satellite service terminal group from existing groups. The state of the high-speed moving vehicle includes: entering a specific area and leaving a specific area, where the specific area is an area with a base station density less than a threshold and limited communication capacity and bandwidth;

[0037] The satellite-terrestrial integrated router is used to determine a first target satellite network when the state of the high-speed moving vehicle is entering a specific area, and then, by collaborating with the satellite-terrestrial integrated router, the satellite service terminal group is switched from the original terrestrial network to the first target satellite network as a whole;

[0038] The satellite-terrestrial integrated router is also used to switch the satellite service terminal group to the target terrestrial base station as a whole by collaborating with the vehicle-mounted router when the state of the high-speed moving vehicle is leaving a specific area;

[0039] The satellite-terrestrial integrated router is also used to determine a second target satellite base station based on the satellite service terminal group requirements and satellite base station information when the first target satellite base station serving the satellite service terminal group triggers an inter-satellite handover condition, and then, by collaborating with the vehicle-mounted router, the satellite service terminal group is switched to the second target satellite base station as a whole.

[0040] Optionally, in an embodiment of the present application, the vehicle-mounted router includes a first satellite-ground cooperation module, and the vehicle-mounted router cooperates with the satellite-ground fusion router through the first satellite-ground cooperation module.

[0041] Optionally, in an embodiment of the present application, the satellite-ground fusion router includes a second satellite-ground cooperation module, a resource management module, a handover decision module, and a location management module, where

[0042] The second satellite-ground cooperation module is used to interact terminal information and handover cooperation information with the first satellite-ground cooperation module of the vehicle-mounted router, interact migration and handover signaling with the resource management module of the satellite base station, and perform IP packet header encapsulation using a tunneling protocol;

[0043] The second satellite-ground cooperation module is further used to, when a satellite base station handover decision is required, perform satellite service terminal handover perception and send data to the handover decision module, and at the same time send an instruction for obtaining satellite-ground trajectories to the location management module, execute the handover after receiving the handover decision result of the handover decision module, update the resource status after the satellite base station access or handover occurs and transmit the data to the resource management module, and then send the satellite service terminal resource management result fed back by the resource management module to the vehicle-mounted router;

[0044] The resource management module is used to schedule the resources sent by the satellite, receive the resource status update information from the second satellite-ground cooperation module, and feedback the resource management result to the second satellite-ground cooperation module;

[0045] The handover decision module is used to make a satellite base station handover decision, and determine the target base station according to the handover perception information from the satellite-ground cooperation module and the trajectory data of the satellite base station and the high-speed moving vehicle transmitted by the location management module

[0046] The location management module is used to store and schedule the trajectory information of the satellite base station and the high-speed moving vehicle, and transmit the trajectory data of the satellite and the high-speed moving vehicle to the handover decision module after receiving the instruction for obtaining satellite-ground trajectories from the second satellite-ground cooperation module.

[0047] To achieve the above object, an embodiment of the third aspect of the present invention provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, it can execute the group handover method of the satellite-ground fusion network described above.

[0048] To achieve the above object, an embodiment of the fourth aspect of the present invention provides a non-transitory computer-readable storage medium, and when the instructions in the storage medium are executed by the processor, it can execute the group handover method of the satellite-ground fusion network described above.

[0049] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Brief Description of the Drawings

[0050] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the drawings, where:

[0051] Figure 1 is a schematic flowchart of a group handover method for a satellite-terrestrial integrated network provided in Embodiment 1 of the present application;

[0052] Figure 2 is a diagram of the functional modules of a satellite-terrestrial integrated router and the interface relationships between the modules in an embodiment of the present application;

[0053] Figure 3 is a schematic overall flowchart of group handover for a satellite service terminal group in an embodiment of the present application;

[0054] Figure 4 is a satellite-terrestrial integrated network group handover scenario in an embodiment of the present application;

[0055] Figure 5 is a ground-satellite migration flowchart for a satellite service terminal group in an embodiment of the present application;

[0056] Figure 6 is a satellite base station handover flowchart for a satellite service terminal group in an embodiment of the present application;

[0057] Figure 7 is a satellite-ground migration flowchart for a satellite service terminal group in an embodiment of the present application;

[0058] Figure 8 is a schematic structural diagram of a group handover device for a satellite-terrestrial integrated network provided in an embodiment of the present application. Detailed Description of the Embodiments

[0059] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0060] The following describes a group handover method and device for a satellite-terrestrial integrated network according to an embodiment of the present application with reference to the drawings.

[0061] Figure 1 is a schematic flowchart of a group handover method for a satellite-terrestrial integrated network provided in Embodiment 1 of the present application.

[0062] AsFigure 1 As shown in Figure 1 , the group handover method of the satellite-ground integrated network includes the following steps:

[0063] Step 101, detecting the state of the high-speed moving vehicle through the vehicle-mounted router, where the state of the high-speed moving vehicle includes: entering a specific area, leaving a specific area, and the specific area is an area where the base station density is less than a threshold and the communication capacity and bandwidth are limited;

[0064] Step 102, if the state of the high-speed moving vehicle is entering a specific area, screening out the satellite service terminal group from the existing groups through the vehicle-mounted router, and then collaborating with the satellite-ground integrated router through the vehicle-mounted router, so as to switch the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole;

[0065] Step 103, if the state of the high-speed moving vehicle is leaving a specific area, collaborating with the satellite-ground integrated router through the vehicle-mounted router, so as to switch the satellite service terminal group to the target terrestrial base station as a whole;

[0066] Step 104, after switching the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole, it further includes: when the first target satellite base station serving the satellite service terminal group triggers the inter-satellite handover condition, determining the second target satellite base station based on the satellite service terminal group requirements and satellite base station information through the satellite-ground integrated router, and then collaborating with the satellite-ground integrated router through the vehicle-mounted router, so as to switch the satellite service terminal group to the second target satellite base station as a whole.

[0067] On the high-speed moving vehicle, the vehicle-mounted router groups the terminals in the vehicle according to conditions such as the carriage position and the number of users, and provides network access and communication services. In this application, when the high-speed moving vehicle enters remote areas such as mountains and suburbs, each vehicle-mounted router screens the terminal groups according to parameters such as the service type, service quality requirements, and service request volume of its served terminals, and through negotiation with the satellite-ground integrated router, switches the screened terminal groups to the satellite network as a whole through the satellite-ground integrated router, and the satellite network provides communication services. For the convenience of description, the terminals that need to be switched to the satellite network screened out hereinafter are called satellite service terminals, and all the screened satellite service terminals form a satellite service terminal group. In this way, a part of the terminals on the high-speed moving vehicle continue to be provided with network access and communication services by the vehicle-mounted router through the terrestrial base station, and the other part passes through the satellite-ground integrated router and is provided with network access and communication services by the satellite network. Usually, the vehicle-mounted router on the high-speed moving vehicle screens according to the existing terminal groups and then switches the terminal groups. The satellite-ground integrated router uses the tunnel protocol to realize the redirection of the transmission path of the terminal group and establishes a communication transmission path through the satellite network.

[0068] When the handover condition is triggered by the movement of the satellite base station serving the satellite service terminal group, the satellite-ground integrated router makes a decision to determine the target satellite base station and conducts handover signaling interaction with the original satellite base station and the target satellite base station. After receiving the confirmation message, the satellite-ground integrated router cooperates with the vehicle-mounted router to switch the satellite service terminals on the high-speed moving vehicle as a whole to the target satellite base station, realizing group handover and ensuring the communication continuity of the terminal group through the satellite network.

[0069] When the high-speed moving vehicle enters an area with good ground base station conditions, the satellite-ground integrated router conducts handover signaling interaction with the satellite base station, and the vehicle-mounted router conducts handover signaling interaction with the target ground base station. After receiving the confirmation message, the satellite-ground integrated router disconnects from the satellite base station. The previously selected satellite service terminal group migrates back to the ground network, and at this time, all the terminals on the high-speed moving vehicle are served by the ground base station through the vehicle-mounted router.

[0070] The functional modules of the satellite-ground integrated router of this application and the interface relationship between each module are as Figure 2 shown, including: vehicle-mounted router, satellite-ground integrated router.

[0071] Among them, the main functional modules of the satellite-ground integrated router include: satellite-ground cooperation module, location management module, handover control module, and resource management module. Specifically:

[0072] The satellite-ground cooperation module is responsible for interacting with the satellite-ground cooperation module of the vehicle-mounted router to exchange terminal information and handover cooperation information, and interacting with the resource management module of the satellite base station to exchange migration and handover signaling. It is also responsible for screening the satellite service terminal group according to the satellite base station parameters and the service requirements of the terminal group, and encapsulating the IP packet header using the tunnel protocol. When a satellite base station handover decision needs to be made, the satellite-ground cooperation module perceives the satellite service terminal handover and sends the data to the handover decision module, and at the same time sends an instruction for obtaining the satellite-ground trajectory to the location management module. After receiving the handover decision result of the handover decision module, it executes the handover. After the satellite base station access or handover occurs, the satellite-ground cooperation module updates the resource status and transmits the data to the resource management module, and then sends the satellite service terminal resource management result fed back by the resource management module to the vehicle-mounted router;

[0073] The location management module is responsible for storing and scheduling the trajectory information of the satellite base station and the high-speed moving vehicle, and transmitting the trajectory data of the satellite and the high-speed moving vehicle to the handover decision module after receiving the instruction for obtaining the satellite-ground trajectory from the satellite-ground cooperation module;

[0074] The handover decision module is responsible for making a satellite base station handover decision, and comprehensively considering the handover perception information from the satellite-ground cooperation module and the trajectory data of the satellite base station and the high-speed moving vehicle transmitted by the location management module to decide the target base station;

[0075] The resource management module is responsible for scheduling the resources sent by the satellite, receiving the resource status update information from the space-ground cooperation module, and feeding back the resource management results to the space-ground cooperation module;

[0076] In this application, the on-vehicle router on the high-speed moving vehicle needs to expand the space-ground cooperation module so that it can cooperate with the space-ground integrated router proposed in this application; specifically, this application expands the space-ground cooperation module for the on-vehicle router on the high-speed moving vehicle so that it can interact with the space-ground integrated router for the terminal group information and the filtered satellite service terminal group information, and carry out cooperative work.

[0077] For the group handover method of the space-ground integrated network proposed in this application, the overall process of group handover of the satellite service terminal group is as Figure 3 shown, including: the ground-satellite migration process of the satellite service terminal group, the handover process between satellite base stations of the satellite service terminal group, and the satellite-ground migration process of the satellite service terminal group.

[0078] Among them, the ground-satellite migration process of the satellite service terminal group can screen out the satellite service terminal group when the high-speed moving vehicle enters a remote area, and enable the satellite base station to provide services for the satellite service terminal group through the space-ground integrated router. The handover process between satellite base stations of the satellite service terminal group can realize the handover of the space-ground integrated router between the original satellite base station and the target satellite base station, and maintain the service continuity of the satellite service terminal group. The satellite-ground migration process of the satellite service terminal group can enable the high-speed moving vehicle to relocate the satellite service terminal group back to the ground network when leaving the remote area.

[0079] The space-ground integrated network group handover scenario of this application is as Figure 4 shown, mainly including: high-speed moving vehicles (such as high-speed trains, etc.) on the ground, ground base stations and ground communication networks, satellite base stations and satellite communication networks in the air.

[0080] Specifically, in the embodiment of this application, the ground-satellite migration process of the satellite service terminal group: when the on-vehicle router detects that the high-speed moving vehicle enters a remote area such as the outskirts of a mountainous area, each on-vehicle router groups and screens out the satellite service terminal group according to parameters such as the terminal service type, service quality requirements, and service request volume in the vehicle it serves. The on-vehicle router realizes the mapping of the IP addresses of the satellite service terminal group, and the tunnel protocol is used on the space-ground integrated router to encapsulate the mapped IP addresses. Through the cooperation of the on-vehicle router and the space-ground integrated router, the satellite service terminal group is handed over to the satellite network, and the satellite network provides network access and communication services. The specific process is as Figure 5 shown, including:

[0081] 1. The vehicle-mounted router interacts with the terminal group to obtain terminal group information (service type, service requirements, etc.).

[0082] 2. The vehicle-mounted router sends a migration preparation message carrying the terminal group information to the satellite-ground integrated router.

[0083] 3. The vehicle-mounted router filters the satellite service terminal group based on satellite base station network parameters (signal strength, etc.), available resources of the satellite base station (bandwidth, number of channels, etc.), and service requirements of the terminal group (delay, etc.).

[0084] 4. The satellite-ground integrated router determines the target satellite base station based on the satellite base station network parameters and the service requirements of the terminal group.

[0085] 5a. The satellite-ground integrated router sends a relocation request message to the target satellite base station.

[0086] 5b. The target satellite base station sends a relocation request confirmation message to the satellite-ground integrated router.

[0087] 6. The satellite-ground integrated router encapsulates the external IP header of the data packets of the satellite service terminal group based on the tunnel protocol.

[0088] 7. The satellite-ground integrated router sends a migration preparation confirmation message to the vehicle-mounted router.

[0089] 8a. The satellite-ground integrated router sends a relocation execution message to the target satellite base station.

[0090] 8b. The target satellite base station sends a relocation execution confirmation message to the satellite-ground integrated router.

[0091] In this application, first, the vehicle-mounted router can use technologies such as NAT to map the private IP addresses of the terminals in the high-speed moving vehicle to public IP addresses. For the terminals that continue to communicate through the terrestrial network, their external addresses are the mapped public IP addresses; for the selected satellite service terminals, the satellite-ground integrated router further encapsulates the mapped public IP addresses based on the tunnel protocol, so that the destination address of the communication backhaul link is located at the satellite-ground integrated router. Thus, the information of the satellite service terminals is all transmitted through the satellite network.

[0092] After the satellite service terminal group switches to the satellite network and the satellite network provides network access and communication services, it further includes:

[0093] When the handover is triggered due to the movement of the satellite base station, the vehicle-mounted router, the satellite-ground integrated router cooperate with the vehicle-mounted router and the satellite network to implement the group handover control of the terminals and maintain communication continuity.

[0094] Satellite base station handover process for a satellite service terminal group: When the movement of the satellite serving the satellite service terminal group triggers the handover inter-satellite handover condition, the satellite-terrestrial fusion router determines the target satellite base station based on the satellite service terminal group requirements and satellite base station information, and then collaborates with the vehicle-mounted router to switch the satellite service terminals on the high-speed moving vehicle as a whole to the target satellite base station. The handover process is as follows Figure 6 shown as:

[0095] 1. The vehicle-mounted router interacts with the terminal group to update the terminal group information.

[0096] 2a. The satellite-terrestrial fusion router sends a handover request message to the target satellite base station.

[0097] 2b. The target satellite base station sends a handover request confirmation message to the satellite-terrestrial fusion router.

[0098] 3a. The satellite-terrestrial fusion router sends a terminal information update request message to the vehicle-mounted router.

[0099] 3b. The vehicle-mounted router sends a terminal information update request confirmation message to the satellite-terrestrial fusion router, carrying the real-time position information of the terminal.

[0100] 4. The satellite-terrestrial fusion router sends a handover preparation message to the original satellite base station.

[0101] 5. The original satellite base station releases resources.

[0102] 6. The original satellite base station sends a handover preparation confirmation message to the satellite-terrestrial fusion router.

[0103] 7a. The satellite-terrestrial fusion router sends a handover execution message to the target satellite base station.

[0104] 7b. The target satellite base station sends a handover execution confirmation message to the satellite-terrestrial fusion router.

[0105] Specifically, in the embodiment of the present application, the satellite-ground migration process of the satellite service terminal group includes: When the vehicle-mounted router detects that the high-speed moving vehicle leaves the remote area, the satellite-terrestrial fusion router exchanges handover signaling with the satellite base station, and the vehicle-mounted router exchanges handover signaling with the target ground base station. After the satellite-terrestrial fusion router obtains the confirmation message, it disconnects from the satellite base station, and the previously screened satellite service terminal group is switched as a whole to the target ground base station. The handover process is as follows Figure 7 shown, including:

[0106] 1a. The vehicle-mounted router sends a migration preparation message to the target ground base station.

[0107] 1b. The target ground base station sends a migration preparation confirmation message to the satellite-terrestrial fusion router.

[0108] 2. The vehicle-mounted router sends a migration start message to the satellite-terrestrial integrated router.

[0109] 3a. The satellite-terrestrial integrated router sends an out-migration request message to the original satellite base station.

[0110] 3b. The original satellite base station sends an out-migration request confirmation message to the satellite-terrestrial integrated router.

[0111] 4. The satellite-terrestrial integrated router sends a migration start confirmation message to the vehicle-mounted router.

[0112] 5a. The vehicle-mounted router sends a migration execution message to the target terrestrial base station.

[0113] 5b. The target terrestrial base station sends a migration execution confirmation message to the vehicle-mounted router.

[0114] To implement the above embodiments, the present application also proposes a group handover device for a satellite-terrestrial integrated network.

[0115] Figure 8 It is a schematic structural diagram of a group handover device for a satellite-terrestrial integrated network provided by an embodiment of the present application.

[0116] As Figure 8 shown, the group handover device for the satellite-terrestrial integrated network includes: a vehicle-mounted router, a satellite-terrestrial integrated router, wherein,

[0117] The vehicle-mounted router is used to detect the state of a high-speed moving vehicle and screen out a satellite service terminal group from existing groups. Among them, the state of the high-speed moving vehicle includes: entering a specific area, leaving a specific area, and the specific area is an area where the base station density is less than a threshold value and the communication capacity and bandwidth are limited;

[0118] The satellite-terrestrial integrated router is used to determine a first target satellite network when the state of the high-speed moving vehicle is entering a specific area, and then through cooperation with the satellite-terrestrial integrated router, the satellite service terminal group is switched from the original terrestrial network to the first target satellite network as a whole;

[0119] The satellite-terrestrial integrated router is also used to, when the state of the high-speed moving vehicle is leaving a preset area, through cooperation with the vehicle-mounted router, switch the satellite service terminal group to the target terrestrial base station as a whole;

[0120] The satellite-terrestrial integrated router is also used to, when the first target satellite base station serving the satellite service terminal group triggers an inter-satellite handover condition, determine a second target satellite base station based on the satellite service terminal group requirements and satellite base station information, and then through cooperation with the vehicle-mounted router, switch the satellite service terminal group to the second target satellite base station as a whole.

[0121] Further, in the embodiments of the present application, the vehicle-mounted router includes a first satellite-ground cooperation module, and the vehicle-mounted router cooperates with the satellite-ground fusion router through the first satellite-ground cooperation module.

[0122] Further, in the embodiments of the present application, the satellite-ground fusion router includes a second satellite-ground cooperation module, a resource management module, a handover decision module, and a location management module. Among them,

[0123] The second satellite-ground cooperation module is used to interact with the first satellite-ground cooperation module of the vehicle-mounted router for terminal information and handover cooperation information, interact with the resource management module of the satellite base station for migration and handover signaling, and encapsulate the IP packet header using the tunnel protocol;

[0124] The second satellite-ground cooperation module is also used to perform satellite service terminal handover perception and send data to the handover decision module when satellite base station handover decision is required, and at the same time send an instruction for obtaining the satellite-ground trajectory to the location management module, execute the handover after receiving the handover decision result of the handover decision module, update the resource status and transmit the data to the resource management module after the satellite base station access or handover occurs, and then send the satellite service terminal resource management result fed back by the resource management module to the vehicle-mounted router;

[0125] The resource management module is used to schedule the resources sent by the satellite, receive the resource status update information from the second satellite-ground cooperation module, and feedback the resource management result to the second satellite-ground cooperation module;

[0126] The handover decision module is used to make a satellite base station handover decision, and determine the target base station according to the handover perception information from the satellite-ground cooperation module and the trajectory data of the satellite base station and the high-speed moving vehicle transmitted by the location management module

[0127] The location management module is used to store and schedule the trajectory information of the satellite base station and the high-speed moving vehicle, and transmit the trajectory data of the satellite and the high-speed moving vehicle to the handover decision module after receiving the instruction for obtaining the satellite-ground trajectory from the second satellite-ground cooperation module.

[0128] It should be noted that the foregoing explanation of the group handover method embodiment of the satellite-ground fusion network is also applicable to the group handover device of the satellite-ground fusion network in this embodiment, and will not be elaborated here.

[0129] To implement the above embodiments, the present invention also proposes a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method described in the above embodiments is implemented.

[0130] To implement the above embodiments, the present invention also provides a non-transitory computer-readable storage medium storing a computer program, which, when executed by a processor, implements the method of the above embodiments.

[0131] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0132] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0133] Any process or method description in a flowchart or described in other ways herein may be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present application includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0134] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definable sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in combination with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then storing it in a computer memory.

[0135] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having suitable combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.

[0136] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the methods of the above-described embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0137] In addition, in each embodiment of the present application, each functional unit may be integrated into a processing module, may exist separately physically for each unit, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0138] The above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disc, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A group handover method for a satellite-ground integrated network, characterized in that, it includes the following steps: Detect the status of a high-speed moving vehicle through an on-vehicle router, where the status of the high-speed moving vehicle includes: entering a specific area and leaving a specific area, and the specific area is an area where the base station density is less than a threshold and the communication capacity and bandwidth are limited; If the status of the high-speed moving vehicle is entering a specific area, screen out a satellite service terminal group from existing groups through the on-vehicle router, and then cooperate with a satellite-ground integrated router through the on-vehicle router, so as to switch the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole; If the status of the high-speed moving vehicle is leaving a specific area, cooperate with the satellite-ground integrated router through the on-vehicle router, so as to switch the satellite service terminal group to the target terrestrial base station as a whole; After switching the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole, it further includes: When the first target satellite base station serving the satellite service terminal group triggers an inter-satellite handover condition, determine a second target satellite base station based on the satellite service terminal group requirements and satellite base station information through the satellite-ground integrated router, and then cooperate with the satellite-ground integrated router through the on-vehicle router, so as to switch the satellite service terminal group to the second target satellite base station as a whole.

2. The method according to claim 1, characterized in that, The process of switching the satellite service terminal group from the original terrestrial network to the first target satellite network as a whole is specifically: Interact with existing terminal groups through the on-vehicle router to obtain terminal group information, and screen out a satellite service terminal group according to satellite base station network parameters, available resources of satellite base stations, and terminal group service requirements, and then send a migration preparation message carrying the terminal group information to the satellite-ground integrated router through the on-vehicle router; Receive the migration preparation message carrying the terminal group information sent by the on-vehicle router at the satellite-ground integrated router end, and then use the satellite-ground integrated router to determine the first target satellite base station; Send an immigration request message to the determined first target satellite base station through the satellite-ground integrated router, and then receive an immigration request confirmation message sent by the first target satellite base station at the satellite-ground integrated router end; Encapsulate the data packets of the satellite service terminal group with an external IP header based on the tunnel protocol through the satellite-ground integrated router; Send a migration preparation confirmation message to the on-vehicle router through the satellite-ground integrated router, and send an immigration execution message to the first target satellite base station; Receive an immigration execution confirmation message sent by the first target satellite base station at the satellite-ground integrated router end to complete the handover process.

3. The method according to claim 1, characterized in that, The process of switching the satellite service terminal group to the target terrestrial base station as a whole is specifically: Send a migration preparation message to the target terrestrial base station through the on-vehicle router; Receive the migration preparation message at the target ground base station end, and then send a migration preparation confirmation message to the satellite-ground integrated router; The migration start message sent to the satellite-ground integrated router through the vehicle-mounted router; Receive the migration preparation confirmation message and the migration start message at the satellite-ground integrated router end, and then send an out-migration request message to the original satellite base station; Receive the out-migration request message at the original satellite base station end, and then send an out-migration request confirmation message to the satellite-ground integrated router; Receive the out-migration request confirmation message at the satellite-ground integrated router end, and then send a migration start confirmation message to the vehicle-mounted router; Receive the migration start confirmation message at the vehicle-mounted router end, and then send a migration execution message to the target ground base station; Receive the migration execution message at the target ground base station end, and perform the migration, and then send a migration execution confirmation message to the vehicle-mounted router to complete the handover process.

4. The method according to claim 1, characterized in that, The overall handover of the satellite service terminal group to the second target satellite base station is specifically: Send a handover request message to the second target satellite base station through the satellite-ground integrated router; Receive the handover request message at the second target satellite base station end, and then send a handover request confirmation message to the satellite-ground integrated router; Receive the handover request confirmation message at the satellite-ground integrated router end, and then send a terminal information update request message to the vehicle-mounted router; Receive the terminal request update message at the vehicle-mounted router end, and then interact with the satellite service terminal group to update the terminal group information, and then send a terminal information update request confirmation message to the satellite-ground integrated router, wherein the terminal information update request confirmation message carries the real-time position information of the terminal; Receive the terminal information update request confirmation message at the satellite-ground integrated router end, and then send a handover preparation message to the first target base station; Receive the handover preparation message at the first target base station end, and then release the resources, and send a handover preparation confirmation message to the satellite-ground integrated router; Send a handover execution message to the second target satellite base station at the satellite-ground integrated router end; Receive the handover execution message at the second target base station end, and then perform the handover, and send a handover execution confirmation message to the satellite-ground integrated router to complete the handover process.

5. A group handover device for a satellite-ground integrated network, characterized in that, It includes a vehicle-mounted router and a satellite-ground integrated router, wherein, The vehicle-mounted router is used to detect the state of the high-speed moving vehicle and screen out the satellite service terminal group from the existing groups, wherein the state of the high-speed moving vehicle includes: entering a specific area and leaving a specific area, and the specific area is an area where the base station density is less than a threshold and the communication capacity and bandwidth are limited; The satellite-ground integrated router is used to determine a first target satellite network when the high-speed moving vehicle enters a specific area, and then cooperate with the satellite-ground integrated router to switch the satellite service terminal group from the original ground network to the first target satellite network as a whole; The satellite-ground integrated router is further used to switch the satellite service terminal group to the target ground base station as a whole by cooperating with the vehicle-mounted router when the high-speed moving vehicle leaves the specific area; The satellite-ground integrated router is further used to determine a second target satellite base station based on the satellite service terminal group requirements and satellite base station information when the first target satellite base station serving the satellite service terminal group triggers the inter-satellite handover condition, and then cooperate with the vehicle-mounted router to switch the satellite service terminal group to the second target satellite base station as a whole.

6. The device according to claim 5, wherein, The vehicle-mounted router includes a first satellite-ground cooperation module, and the vehicle-mounted router cooperates with the satellite-ground integrated router through the first satellite-ground cooperation module.

7. The device according to claim 5, wherein, The satellite-ground integrated router includes a second satellite-ground cooperation module, a resource management module, a handover decision module, and a location management module, wherein, The second satellite-ground cooperation module is used to interact terminal information and handover cooperation information with the first satellite-ground cooperation module of the vehicle-mounted router, and interact migration and handover signaling with the resource management module of the satellite base station, and encapsulate the IP packet header using the tunnel protocol; The second satellite-ground cooperation module is further used to perform satellite service terminal handover perception and send data to the handover decision module when satellite base station handover decision is required, and at the same time send an instruction for obtaining satellite-ground trajectory to the location management module, execute the handover after receiving the handover decision result of the handover decision module, update the resource state and transmit the data to the resource management module after satellite base station access or handover occurs, and then send the satellite service terminal resource management result fed back by the resource management module to the vehicle-mounted router; The resource management module is used to schedule the resources sent by the satellite, receive the resource state update information from the second satellite-ground cooperation module and feedback the resource management result to the second satellite-ground cooperation module; The handover decision module is used to make a satellite base station handover decision and determine the target base station according to the handover perception information from the satellite-ground cooperation module and the trajectory data of the satellite base station and the high-speed moving vehicle transmitted by the location management module; The location management module is used to store and schedule the trajectory information of the satellite base station and the high-speed moving vehicle, and transmit the trajectory data of the satellite and the high-speed moving vehicle to the handover decision module after receiving the instruction for obtaining the satellite-ground trajectory from the second satellite-ground cooperation module.

8. A computer device, wherein, It includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method described in any one of claims 1-4 is implemented.

9. A non-transitory computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the method described in any one of claims 1-4 is implemented.

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