Mobile management method, device and storage medium based on computing power service

Abstract

The present application provides a mobile management method, device and storage medium based on computing power service, which relates to the field of vehicle network. The method is applied to the cellular vehicle network C‑V2X connected to the 5G core network, C‑V2X includes an on-board node OBU and a roadside node RSU, and the 5G core network includes a multi-access edge computing MEC, and MEC is used to provide computing power services for the OBU. The method includes: the OBU registers in the 5G core network and obtains C‑V2X authentication; when the OBU periodically publishes a first broadcast message and receives a second broadcast message periodically published by a second RSU within a preset time period, the OBU determines that the OBU has moved from the area of the first RSU to the area of the second RSU based on the first broadcast message and the second broadcast message; the OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC. The method of the present application improves the continuity of the computing power service during the movement of the OBU.

Description

Technical Field

[0001] The present application relates to Internet of Vehicles technology, and in particular to a mobile management method, device and storage medium based on computing power services. Background Art

[0002] With the development of automotive automation technologies such as autonomous driving, obtaining surrounding computing resources through cellular vehicle-to-everything (C-V2X) has become a promising direction for vehicle networking applications.

[0003] In the existing technology, while a vehicle is moving, it obtains computing power resources based on the communication link between the on-board node (OBU) and the roadside node (RSU) to realize computing power services such as vehicle identity recognition and electronic deduction.

[0004] Since the vehicle is moving quickly, the OBU moves quickly between different RSUs. The existing C-V2X has weak mobility management based on computing power services, which leads to the technical problem of poor continuity of computing power services during the movement of the OBU. Summary of the Invention

[0005] The present application provides a mobile management method, device and storage medium based on computing power service, which is used to solve the problem that the mobile management based on computing power service of C-V2X is weak, resulting in poor continuity of computing power service during the movement of OBU.

[0006] On the one hand, the present application provides a mobility management method based on computing power services, which is applied to a cellular vehicle-to-everything (C-V2X) network connected to a 5G core network. The C-V2X includes an onboard node (OBU) and a roadside node (RSU). The 5G core network includes a multi-access edge computing (MEC). The MEC is used to provide computing power services for the OBU. The method includes:

[0007] The OBU registers with the 5G core network and obtains C-V2X certification;

[0008] When the OBU periodically publishes first broadcast information and receives second broadcast information periodically published by the second RSU within a preset time period, it is determined based on the first broadcast information and the second broadcast information that the OBU has moved from the area of the first RSU to the area of the second RSU; wherein the first broadcast information includes the location information of the OBU, and the second broadcast information includes the location information of the second RSU;

[0009] The OBU switches the computing power service from the first RSU to the second RSU based on the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC.

[0010] In a second aspect, the present application provides a mobile management device based on computing power services. The device is applied to a cellular vehicle-to-everything (C-V2X) network connected to a 5G core network. The C-V2X includes an onboard node OBU and a roadside node RSU. The 5G core network includes a multi-access edge computing (MEC). The MEC is used to provide computing power services for the OBU. The device includes:

[0011] The first processing module is used for the OBU to register in the 5G core network and obtain C-V2X certification;

[0012] A second processing module is configured to determine, when the OBU periodically publishes first broadcast information and receives second broadcast information periodically published by the second RSU within a preset time period, that the OBU has moved from the area of the first RSU to the area of the second RSU based on the first broadcast information and the second broadcast information; wherein the first broadcast information includes the location information of the OBU, and the second broadcast information includes the location information of the second RSU;

[0013] The OBU switches the computing power service from the first RSU to the second RSU based on the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC.

[0014] According to a third aspect of the present application, an electronic device is provided, including:

[0015] processor and memory;

[0016] Memory stores computer-executable instructions;

[0017] The processor executes the computer-executable instructions stored in the memory, so that the electronic device executes any one of the mobile management methods based on computing power services in the first aspect.

[0018] In a fourth aspect, the present application provides a computer-readable storage medium, which stores computer execution instructions. When the computer execution instructions are executed by a processor, they are used to implement a mobile management method based on computing power services as described in any one of the first aspects.

[0019] The mobile management method, device and storage medium based on computing power service provided in the present application connect C-V2X to the 5G core network. When it is determined based on the first broadcast information and the second broadcast information that the OBU moves from the area of the first RSU to the area of the second RSU, the computing power service is switched when the first RSU and the second RSU are connected to the MEC of the same 5G core network, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU; when the first RSU is connected to the first MEC in the 5G core network and the second RSU is connected to the second MEC in the 5G core network, the computing power service is switched, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU, and the computing power service microcontainer is switched from the first MEC to the second MEC, thereby realizing the mobile management of computing power service in C-V2X. When the OBU moves from the first RSU to the second RSU, the computing power service is also switched from the first RSU to the second RSU. The computing power network continues to provide services for the OBU, thereby improving the continuity of the computing power service during the movement of the OBU. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1 A diagram showing a specific application scenario of the mobile management method based on computing power services provided in this application;

[0022] Figure 2 Flowchart of the mobile management method based on computing power service provided in an embodiment of the present application;

[0023] Figure 3 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 1 ;

[0024] Figure 4 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 2 ;

[0025] Figure 5 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 3 ;

[0026] Figure 6 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 4 ;

[0027] Figure 7 A schematic diagram of the structure of a mobile management device based on computing power services provided in an embodiment of the present application;

[0028] Figure 8 A hardware structure diagram of a mobile management device based on computing power services provided in an embodiment of the present application.

[0029] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0030] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0031] First, let’s explain the terms involved in this application:

[0032] Cellular Vehicle-to-Everything (C-V2X) refers to vehicle-to-everything (V2X) technology based on cellular networks. C-V2X empowers vehicles with communication capabilities, including vehicle-to-vehicle (V2V) communication between OBUs through the PC5 interface, vehicle-to-infrastructure (V2I) communication between OBUs and RSUs through the direct communication (PC5) interface, vehicle-to-person (V2P) communication, and vehicle-to-network (V2N) communication between OBUs and 5G wireless networks (5G-RAN) through the cellular network communication (Uu) interface.

[0033] On-Board Unit (OBU): refers to a microwave device installed on a vehicle that uses DSRC (Dedicated Short Range Communication) technology to communicate with the RSU;

[0034] Road Side Unit (RSU): A device installed on the roadside that uses DSRC (Dedicated Short Range Communication) technology to communicate with the OBU to implement functions such as vehicle identification and electronic point deduction.

[0035] Multi-access Edge Computing (MEC) refers to cloud computing located at the edge of the network. It deploys computing power closer to users, reduces network latency, and provides users with computing power and applications nearby, thereby significantly improving the business experience.

[0036] Figure 1 This is a specific application scenario diagram of the mobile management method based on computing power service provided by this application. Figure 1 As shown, the application scenario includes: an on-board node OBU100 in C-V2X, a first RSU101, and a second RSU102, and a MEC103 in the 5G core network. Among them, C-V2X has been connected to the 5G core network, and the first RSU and the second RSU are connected to the MEC of the same 5G core network. For example, when a vehicle equipped with OBU100 moves from the area of the first RSU101 to the area of the second RSU102, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU. However, as the OBU moves, there is a lack of means to switch computing power services.

[0037] The present application provides a mobile management method based on computing power service. The method connects C-V2X to the 5G core network. When it is determined based on the first broadcast information and the second broadcast information that the OBU moves from the area of the first RSU to the area of the second RSU, the computing power service is switched when the first RSU and the second RSU are connected to the MEC of the same 5G core network, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU; when the first RSU is connected to the first MEC in the 5G core network and the second RSU is connected to the second MEC in the 5G core network, the computing power service is switched, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU, and the computing power service microcontainer is switched from the first MEC to the second MEC, thereby realizing the mobile management of the computing power service in C-V2X. When the OBU moves from the first RSU to the second RSU, the computing power service is also switched from the first RSU to the second RSU, and the computing power network continues to provide services for the OBU, thereby solving the problem that the mobile management of C-V2X based on computing power service is weak, resulting in poor continuity of computing power service during the movement of the OBU.

[0038] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0039] Figure 2 The mobile management method process based on computing power service provided in this application embodiment Figure 1 .like Figure 2 As shown, the method of this embodiment is applied to a cellular vehicle-to-everything (C-V2X) network connected to a 5G core network. The C-V2X includes an onboard node OBU and a roadside node RSU. The 5G core network includes a multi-access edge computing (MEC). The MEC is used to provide computing power services for the OBU. The mobility management method includes:

[0040] S201 and OBU register in the 5G core network and obtain C-V2X certification;

[0041] In this embodiment, the OBU registers in the 5G core network, is authenticated by the 5G core network, obtains the authority to use computing services, and obtains the C-V2X token (TOKEN) based on the authentication result of the 5G core network. The OBU uses the TOKEN to complete login and authentication in C-V2X.

[0042] Among them, a C-V2X includes at least one OBU and at least one RSU, and the 5G core network includes at least one MEC.

[0043] S202, when the OBU periodically publishes first broadcast information and receives second broadcast information periodically published by the second RSU within a preset time period, determining based on the first broadcast information and the second broadcast information that the OBU has moved from the area of the first RSU to the area of the second RSU; wherein the first broadcast information includes the location information of the OBU, and the second broadcast information includes the location information of the second RSU;

[0044] In this embodiment, the OBU broadcasts the first broadcast information based on the PC5 interface, and the RSU broadcasts the second broadcast information based on the PC5 interface; the OBU that originally received the second broadcast information broadcast by the first RSU receives the second broadcast information periodically released by the second RSU within the preset time length, that is, the OBU enters the second RSU coverage area from the first RSU coverage area within the preset time length.

[0045] The first broadcast information includes the location information of the OBU and / or the unique identification of the vehicle carrying the OBU; the second broadcast information includes the RSU location information, RSU identification information and / or service content code information; wherein, the RSU identification information includes the operator network identification information to which the RSU belongs, the 5G access network identification information to which the RSU belongs, the virtual base station identification information to which the RSU belongs, the MEC identification information to which the RSU belongs, and the RSU node identification information; after the OBU receives the second broadcast information of the second RSU, it can determine based on the second broadcast information that the OBU is currently within the coverage range of the second RSU, and by comparing the location information of multiple second RSUs, the location change of the OBU can be determined, that is, the RSU that the OBU is leaving and the RSU that it is entering.

[0046] S203. The OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC.

[0047] In this embodiment, when it is determined that the OBU moves from the area of the first RSU to the area of the second RSU, the link of the OBU in C-V2X is switched, and the computing power service is switched from the first RSU to the second RSU; according to the computing power connection information between the first RSU and the second RSU and the MEC, the links that need to be switched are different.

[0048] The present application provides a mobility management method based on computing power service, which connects C-V2X to the 5G core network. When it is determined based on the first broadcast information and the second broadcast information that the OBU moves from the area of the first RSU to the area of the second RSU, the computing power service is switched when the computing power connection information indicates that the first RSU and the second RSU are connected to the MEC of the same 5G core network, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU; when the computing power connection information indicates that the first RSU is connected to the first MEC in the 5G core network, the second RSU is connected to the 5G core network, and the computing power service is switched when the computing power connection information indicates that the first RSU is connected to the first MEC in the 5G core network, and the second RSU is connected to the 5G core network. When the second MEC in the core network is connected, the computing power service is switched, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU, and the computing power service microcontainer is switched from the first MEC to the second MEC, thereby realizing the mobile management of the computing power service in C-V2X. When the OBU moves from the first RSU to the second RSU, the computing power service is also switched from the first RSU to the second RSU, and the computing power network continues to provide services for the OBU, solving the problem that the mobile management of C-V2X based on computing power service is weak, resulting in poor continuity of computing power service during the movement of OBU.

[0049] Figure 3 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 1 , provides a schematic diagram of C-V2X access to the 5G core network, such as Figure 3 As shown, the on-board node OBU100 in C-V2X accesses the 5G core network based on the first RSU101 and the virtual base station 301, or C-V2X accesses the 5G core network based on the 5G access network 302, and the first RSU101 and the second RSU102 are connected to the MEC103 of the same 5G core network. Exemplarily, when the OBU100 is in the coverage area of the first RSU101, the C-V2X accesses the 5G core network based on the first RSU101 and the virtual base station 301 and connects to the MEC103; when the OBU100 is not in the coverage area of any RSU, the C-V2X accesses the 5G core network based on the 5G access network 302 and connects to the MEC103.

[0050] In this embodiment, the virtual base station can be a virtual node B (vNodeB); the virtual base station serves as the access and protocol conversion node between C-V2X and the 5G core network. Its main functions include: Uu protocol conversion, data protection and compression, routing from RSU to 5G network, QoS control from RSU to 5G network, and management of connected RSUs.

[0051] In this embodiment, the virtual base station accesses the 5G network through the User Plane Function (UPF) / GW-U of the MEC. The offload network element provides corresponding offload strategies for different computing tasks, so that computing services can be scheduled and migrated between MECs at different deployment levels; the vehicle's OBU can access the 5G network as a terminal through the 5G access network to perform user registration and enrollment, Internet connection, voice calls, short messages and other 5G services.

[0052] In a possible implementation method, the computing power service-based mobility management method provided in an embodiment of the present application, the first RSU and the second RSU belong to the same C-V2X.

[0053] In one possible scenario, the first RSU and the second RSU belong to the same C-V2X. When the computing power connection information indicates that the first RSU and the second RSU are connected to the same virtual base station, and the first RSU and the second RSU correspond to the same MEC, the OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC. Figure 4 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 2 , combined with Figure 4 As shown, the switching method is:

[0054] S401, establishing a second link from the virtual base station to the second RSU;

[0055] In this embodiment, OBU100 receives the second broadcast information broadcast by the first RSU101 and the second broadcast information broadcast by the second RSU102. OBU100 reports the second broadcast information of the first RSU101 and the second RSU102 to the virtual base station 301. The virtual base station 301 determines that the first RSU101 and the second RSU102 belong to the same C-V2X based on the first RSU identification information and the second RSU identification information carried in the second broadcast information, and that the first RSU101 originally connected to the OBU100 and the switching target second RSU102 are connected to the same virtual base station 301; OBU100 switches the computing power service from the first RSU101 to the second RSU102 according to the computing power connection information of the second RSU102, and first establishes a second link from the virtual base station 301 to the second RSU102.

[0056] S402: After determining that the state of the second link is normal, switch the first link to the second link; wherein the first link refers to the link connecting the first RSU and the virtual base station;

[0057] In this embodiment, the first link refers to the link connecting the first RSU101 and the virtual base station 301; since the first RSU101 and the second RSU102 are connected to the same virtual base station 301, the computing power service used by the OBU100 is deployed in the same MEC103 of the 5G core network. Based on the routing function of the virtual base station 301, the OBU100 switches the first link to the second link, thereby switching the computing power service from the first RSU101 to the second RSU102.

[0058] S403: Release the resources occupied by the first link.

[0059] By executing S401 to S403, the computing power service of the OBU can be switched between the first RSU and the second RSU connected to the same virtual base station, ensuring that the computing power service is continuously available when the OSU moves from the area covered by the first RSU to the area covered by the second RSU.

[0060] In another possible scenario, when the computing power connection information indicates that the first RSU101 is connected to the first virtual base station 501, the second RSU102 is connected to the second virtual base station 502, and the first virtual base station 501 and the second virtual base station 502 are connected to the same MEC503, OBU100 switches the computing power service from the first RSU101 to the second RSU102 according to the computing power connection information of the second RSU102. Figure 5 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 3 , combined with Figure 5 As shown, the switching method is:

[0061] S501: Establish a third link from the second RSU 103 to the MEC 503 via the second virtual base station 502;

[0062] S502: After determining that the status of the third link is normal, switch the fourth link to the third link; wherein the fourth link refers to the link connecting the first RSU 101 and the MEC 503 via the first virtual base station 501;

[0063] S503: Release the resources occupied by the fourth link.

[0064] By executing S501 to S503, the computing power service of the OBU can be switched between the first RSU and the second RSU connected to different virtual base stations, ensuring that the computing power service is continuously available when the OSU moves from the area covered by the first RSU to the area covered by the second RSU.

[0065] In a possible implementation, the computing power service-based mobility management method provided in an embodiment of the present application, wherein the second broadcast information further includes identification information of a second C-V2X to which the second RSU belongs, and determining, based on the first broadcast information and the second broadcast information, that the OBU moves from an area of the first RSU to an area of the second RSU, includes: the OBU determining, based on the first broadcast information and the second broadcast information, that the OBU moves from an area of the first C-V2X to an area of the second C-V2X; wherein the first C-V2X is an area to which the first RSU belongs, and the computing power connection information indicates that the second RSU belongs to the second C-V2X;

[0066] The OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU, including: switching the computing power service from the first MEC connected to the first C-V2X to the second MEC connected to the second C-V2X.

[0067] In this embodiment, the first broadcast information includes the location information of the OBU and / or the unique identification of the vehicle carrying the OBU; the second broadcast information includes the RSU location information, RSU identification information and / or service content code information; wherein, the RSU identification information includes the operator network identification information to which the RSU belongs, the 5G access network identification information to which the RSU belongs, the virtual base station identification information to which the RSU belongs, the MEC identification information to which the RSU belongs, and the RSU node identification information; after the OBU receives the second broadcast information of the second RSU, it can determine that the OBU is currently within the coverage range of the second RSU, and determine the virtual base station identification information, the C-V2X and / or the MEC identification information of the RSU to which the OBU is currently connected based on the RSU node identification information in the second broadcast information.

[0068] In one possible scenario, the computing power service-based mobility management method provided in an embodiment of the present application runs the computing power service in the first MEC601 as a microcontainer, and switches the computing power service from the first MEC601 connected to the first C-V2X to the second MEC602 connected to the second C-V2X. Figure 6 Scenario of the mobile management method based on computing power service provided in the embodiment of this application Figure 4 , combined with Figure 6 As shown, the switching method is:

[0069] S601. Obtain the microcontainer initialization parameters of the computing service in the first MEC 601;

[0070] In this embodiment, the computing power service in MEC is provided in the form of CaaS (Computer as a Service); the computing power service runs directly in the MEC virtual machine monitor hypervisor in the form of microcontainers; the microcontainer only contains the OS library and the language dependencies required to run the application and the application itself, and nothing else needs to be packaged. Therefore, the size of the microcontainer is significantly smaller than that of the container, so it can be quickly downloaded from the image library and loaded and run quickly.

[0071] S602: Generate a real-time mirror micro-container of the micro-container of the computing service in the first MEC 601, and send the real-time mirror micro-container to the second MEC 602;

[0072] S603: In the second MEC 602, the real-time image micro-container is loaded and started, and the real-time image micro-container is initialized based on the initialization parameters;

[0073] In this embodiment, the real-time image micro-container is loaded and started in the hypervisor of the second MEC 602 .

[0074] S604: Synchronize the microcontainer data of the computing service and the real-time mirror microcontainer data, and switch the computing service from the first MEC 601 connected to the first C-V2X to the second MEC 602 connected to the second C-V2X.

[0075] In this embodiment, the synchronization management unit in the microcontainer of the first MEC and the synchronization management unit of the microcontainer of the second MEC are responsible for synchronizing the microcontainer application data; the synchronization management unit of the first MEC reads the module ID and running context of the last module executed by the computing power service microcontainer of the first MEC, and the first MEC sends the module ID and running context to the second MEC. The second MEC loads the running context and starts the module ID running. After the corresponding modules in the first MEC and the second MEC are completed, the OBU switches from the computing power service microcontainer of the first MEC to the computing power service microcontainer of the second MEC.

[0076] By executing S601 to S604, the computing power service of the OBU can be switched between different MECs, ensuring that the computing power service remains available when the OSU moves from the area covered by the first RSU connected to the first MEC to the area covered by the second RSU connected to the second MEC.

[0077] In one possible implementation, when the computing power service-based mobility management method provided in an embodiment of the present application does not receive the second broadcast information within a preset time period, the method further includes:

[0078] S701, determining that the OBU moves from the first RSU area to the first RSU-free area;

[0079] In this embodiment, the OBU originally receives the second broadcast information of the first RSU, but does not receive any second broadcast information within a preset time period, and then determines that the OBU moves to the first RSU-free area without RSU coverage.

[0080] S702. Switch the computing service from the first RSU to the first 5G access network based on the first 5G access network; wherein the first RSU-free area is used to represent an area that is not covered by the RSU and is covered by the first 5G access network.

[0081] In this embodiment, the 5G Radio Access Network (5G RAN) device is a gNodeB; the computing power service is switched from the first RSU to the first 5G access network based on the first 5G access network, that is, based on the user plane function (UPF) of the 5G core network associated with the gNodeB, the computing power service is switched from the first MEC associated with the first RSU to the second MEC associated with the gNodeB.

[0082] By executing S701 to S702, it can be achieved that when the OBU moves from an area covered by the first RSU to an area without RSU coverage, the computing power service continues to be available.

[0083] In one possible implementation, the computing power service-based mobility management method provided in an embodiment of the present application further includes: when the second broadcast information is not received within a preset time period:

[0084] S801, determining that the OBU moves from a first RSU-free area to a second RSU-free area;

[0085] S802. Switch the computing service from the first 5G access network to the second 5G access network; wherein the first RSU-free area is used to represent an area that has no RSU coverage and is covered by the first 5G access network; the second RSU-free area is used to represent an area that has no RSU coverage and is covered by the second 5G access network.

[0086] By executing S801 to S802, it can be achieved that when the OBU moves from a first area without RSU coverage to a second area without RSU coverage, computing power services continue to be available.

[0087] In one possible implementation, the computing power service-based mobility management method provided in an embodiment of the present application further includes: when the second broadcast information is not received within a preset time period:

[0088] S901, determining that the OBU moves from the third RSU-free area to the fourth RSU-free area;

[0089] S902. Switch the computing power service from the first operator network to the second operator network; wherein the third RSU-free area is used to represent an area that has no RSU coverage and is covered by the third operator network; the fourth RSU-free area is used to represent an area that has no RSU coverage and is covered by the fourth operator network.

[0090] By executing S801 to S802, it can be achieved that when the OBU moves from the third RSU-free area of the first operator network to the fourth RSU-free area of the second operator network, computing power services are continuously available.

[0091] In one possible implementation, the computing power service-based mobility management method provided in an embodiment of the present application includes:

[0092] When the OBU is in the coverage area of the current RSU, the computing power service request is sent to the MEC through the virtual base station connected to the current RSU based on the current RSU to obtain computing power services;

[0093] When the OBU is in the first RSU-free area, a computing power service request is sent to the MEC based on the first 5G access network to obtain computing power service; wherein the first RSU-free area is used to characterize an area that has no RSU coverage and is covered by the first 5G access network.

[0094] In this embodiment, when the OBU of the vehicle needs computing power resource services, there are two ways to request services. The first is that when the OBU is in the current RSU coverage area, a computing power service request is initiated through the RSU. The service request is transferred to the 5G network through the virtual base station and then sent to the V2X computing power service management unit of the MEC central node to make a computing power service request; the second is that when the OBU is not in the RSU coverage area, the OBU makes a computing power service request to the V2X computing power service management unit in the MEC central node through the gNodeB node of the 5G access network; the V2X computing power service management unit in the MEC central node completes the generation and loading of the computing power service in the corresponding MEC according to the area where the OBU is located.

[0095] In one possible implementation, the computing service-based mobility management method provided in the embodiment of the present application, the OBU registers in the 5G core network and obtains C-V2X authentication, including:

[0096] Encrypt the OBU's permanent user identity SUPI into a privacy protection identity SUCI;

[0097] In this embodiment, when an OBU registers for the first time, the Subscription Permanent Identifier (SUPI) of the OBU is encrypted into a Subscription Concealed Identifier (SUCI).

[0098] The OBU registers in the 5G core network based on the SUCI and receives the token generated by the 5G core network;

[0099] In this embodiment, the OBU initially registers with the assigned 5G core network's Authentication Management Function (AMF). The AMF forwards the SUCI to the Authentication Server Function (AUSF) and the Unified Data Management Function (UDM) to retrieve the SUPI with the authentication request. The AUSF replies to the authentication response with the SUPI information. The AMF generates a Globally Unique Temporary UE Identity (GUTI) based on the SUPI and retains the mapping from the GUTI to the SUPI for further registration or protocol data unit (PDU) session requests. The AUSF generates the token required for C-V2X login, and the OBU can access the 5G network based on the login information containing the SUPI (identity).

[0100] The OBU logs into the C-V2X network based on the TOKEN and obtains C-V2X authentication.

[0101] In this embodiment, the OBU can also access the computing power services in C-V2X and MEC based on the generated TOKEN.

[0102] In this embodiment, two registration management (RM) states, namely, registration state and deregistration state, are defined in the 5G core network; when the OBU is turned on and the computing power service option is turned on, the OBU registers in the 5G core network. If the OBU registration is successful, the OBU state in the 5G core network is registered state. In this state, the OBU can initiate a request for computing power service to the 5G core network at any time and use the computing power service provided by the MEC in the 5G core network; when the OBU is turned on and the computing power service option is turned on, the OBU registers in the 5G core network. If the 5G core network rejects the OBU registration or the OBU initiates a deregistration process to the 5G core network, the OBU state in the 5G core network is deregistration state. In this state, the OBU cannot use the computing power service of the MEC in the 5G core network.

[0103] In one possible implementation, the computing power service-based mobility management method provided in the embodiment of the present application includes the following steps after the OBU registers in the 5G core network and obtains C-V2X authentication:

[0104] The OBU releases the resources occupied when registering in the 5G core network and obtaining C-V2X authentication.

[0105] The 5G core network has expanded mobility management (5G Mobile Management, 5GMM), which can provide mobility management for a variety of different terminal mobility scenarios; different users have different mobility requirements. For example, for fixed terminals such as fixed wireless access terminals or fixed monitoring equipment, there is no need to implement complex mobility management processes; for mobile terminals such as mobile phones and vehicles, it is necessary to track and ensure that the terminals are reachable, so a strict mobility management process needs to be implemented; when fixed terminals such as RSUs require computing power services, they can access the 5G core network based on the virtual base station connected to the RSU and obtain the computing power services of the MEC in the 5G core network.

[0106] The 3rd Generation Partnership Project (3GPP), the international communications standards organization for 5G networks, provides an on-demand mobility management solution, through which mobility-related services can be added or deleted.

[0107] This embodiment is based on the mobility management solution of on-demand mobility of the 5G core network, and designs a computing power service mobility management signaling implementation method based on 5G core network signaling. Since the OBU will actively connect to the 5G core network to initiate a computing power service request when switching to a different RSU or using computing power service, and switch the RSU, virtual base station or MEC, the 5G core network does not need to track the real-time dynamics of the OBU; the OBU implements the switching of computing power services based on the 5G core network's terminal-initiated connection only (Mobile Initiated Connection Only, MICO) mobility management use case; the 5G core network sets the access of the OBU as a specific process for computing power services. After accessing the 5G core network, the OBU can only initiate specific processes in the 5G core network.

[0108] The present application provides a mobile management method based on computing power service, which connects C-V2X to the 5G core network. When it is determined based on the first broadcast information and the second broadcast information that the OBU moves from the area of the first RSU to the area of the second RSU, the computing power service is switched when the computing power connection information indicates that the first RSU and the second RSU are connected to the MEC of the same 5G core network, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU; when the computing power connection information indicates that the first RSU is connected to the first MEC in the 5G core network and the second RSU is connected to the second MEC in the 5G core network, the computing power service is switched, that is, the link between the OBU and the first RSU is switched to the link between the OBU and the second RSU, and the computing power service microcontainer is switched from the first MEC to the second MEC, thereby realizing the mobile management of the computing power service in C-V2X. When the OBU moves from the first RSU to the second RSU, the computing power service is switched. The service is also switched from the first RSU to the second RSU, and the computing power network continues to provide services for the OBU; it is determined that the OBU moves from the first RSU area to the first RSU-free area; when the OBU moves to the area without RSU coverage, the computing power service is switched from the RSU to the 5G access network based on the 5G access network; when the OBU moves from the first RSU-free area to the second RSU-free area, the computing power service is switched from the first 5G access network covering the first RSU-free area to the second 5G access network covering the second RSU-free area; the mobile management method based on computing power service provided in the present application integrates the C-V2X network architecture and the 5G network architecture, the system deployment method is simple and low-cost, and utilizes the registration mechanism of the 5G network and the token security system of the C-V2X to achieve the technical effect of OBU accessing the computing power service in the MEC; it solves the problem that the C-V2X mobile management based on computing power service is weak, resulting in poor continuity of computing power service during the movement of the OBU.

[0109] Figure 7This is a schematic diagram of the structure of a mobile management device based on computing power services provided in an embodiment of the present application. The device of this embodiment can be in the form of software and / or hardware. Figure 7 As shown, an embodiment of the present application provides a mobile management device 700 based on computing power service, which is applied to a cellular vehicle-to-everything (C-V2X) network accessed to a 5G core network. The C-V2X includes an on-board node OBU and a roadside node RSU. The 5G core network includes a multi-access edge computing (MEC). The MEC is used to provide computing power services for the OBU. The device includes: a first processing module 71, a second processing module 72, and a switching module 73.

[0110] The first processing module 71 is used for the OBU to register in the 5G core network and obtain C-V2X authentication;

[0111] A second processing module 72 is configured to determine, when the OBU periodically publishes first broadcast information and receives second broadcast information periodically published by the second RSU within a preset time period, that the OBU has moved from the area of the first RSU to the area of the second RSU based on the first broadcast information and the second broadcast information; wherein the first broadcast information includes the location information of the OBU, and the second broadcast information includes the location information of the second RSU;

[0112] The switching module 73 is used for the OBU to switch the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC.

[0113] In one possible implementation, based on a mobile management device for computing services, the OBU accesses the 5G core network based on the RSU and the virtual base station; wherein the virtual base station is connected to at least one RSU in C-V2X; the virtual base station accesses the 5G core network based on the MEC offload network element; or, the OBU is connected to the 5G core network based on the 5G access network.

[0114] In a possible implementation, in a mobility management device based on computing power services, the first RSU and the second RSU belong to the same C-V2X.

[0115] In one possible implementation, in a computing power service-based mobility management device, when the computing power connection information indicates that the first RSU and the second RSU are connected to the same virtual base station, and the first RSU and the second RSU correspond to the same MEC, the switching module is configured to:

[0116] Establishing a second link from the virtual base station to the second RSU;

[0117] After determining that the state of the second link is normal, switching the first link to the second link; wherein the first link refers to the link connecting the first RSU and the virtual base station;

[0118] Release the resources occupied by the first link.

[0119] In one possible implementation, in a mobility management device based on computing power services, when the computing power connection information indicates that the first RSU is connected to the first virtual base station, the second RSU is connected to the second virtual base station, and the first virtual base station and the second virtual base station are connected to the same MEC, the switching module is configured to:

[0120] Establishing a third link from the second RSU to the MEC via the second virtual base station;

[0121] After determining that the status of the third link is normal, switching the fourth link to the third link; wherein the fourth link refers to the link connecting the first RSU and the MEC via the first virtual base station;

[0122] The resources occupied by the fourth link are released.

[0123] In a possible implementation, the computing power service-based mobility management device further includes, in the second broadcast information, identification information of a second C-V2X to which the second RSU belongs, and determines, based on the first broadcast information and the second broadcast information, that the OBU moves from an area of the first RSU to an area of the second RSU, including: the OBU determining, based on the first broadcast information and the second broadcast information, that the OBU moves from an area of the first C-V2X to an area of the second C-V2X; wherein the first C-V2X is an area to which the first RSU belongs, and the computing power connection information indicates that the second RSU belongs to the second C-V2X; and the switching module is configured to:

[0124] Switch the computing power service from the first MEC connected to the first C-V2X to the second MEC connected to the second C-V2X.

[0125] In one possible implementation, based on a mobile management device for computing power services, the computing power services run as microcontainers in the first MEC, and the switching module is used to:

[0126] Get the initialization parameters of the microcontainer for the computing service in the first MEC;

[0127] Generate a real-time mirror micro-container of the micro-container of the computing service in the first MEC, and send the real-time mirror micro-container to the second MEC;

[0128] In the second MEC, the real-time image microcontainer is loaded and started, and the real-time image microcontainer is initialized based on the initialization parameters;

[0129] The microcontainer data of the computing power service and the real-time mirror microcontainer data are synchronized, and the computing power service is switched from the first MEC connected to the first C-V2X to the second MEC connected to the second C-V2X.

[0130] In one possible implementation, when the computing power service-based mobility management device does not receive the second broadcast information within a preset time period, the device is configured to:

[0131] Determine that the OBU moves from the first RSU area to the first RSU-free area;

[0132] Based on the first 5G access network, the computing power service is switched from the first RSU to the first 5G access network; wherein, the first RSU-free area is used to characterize an area that is not covered by RSU and is covered by the first 5G access network.

[0133] In one possible implementation, when the computing power service-based mobility management device does not receive the second broadcast information within a preset time period, the device is configured to:

[0134] Determine that the OBU moves from a first RSU-free area to a second RSU-free area;

[0135] Switch the computing power service from the first 5G access network to the second 5G access network; wherein, the first RSU-free area is used to characterize the area that has no RSU coverage and is covered by the first 5G access network; the second RSU-free area is used to characterize the area that has no RSU coverage and is covered by the second 5G access network.

[0136] In one possible implementation, a mobile management device based on computing power services is configured to:

[0137] When the OBU is in the coverage area of the current RSU, the computing power service request is sent to the MEC through the virtual base station connected to the current RSU based on the current RSU to obtain computing power services;

[0138] When the OBU is in the first RSU-free area, a computing power service request is sent to the MEC based on the first 5G access network to obtain computing power service; wherein the first RSU-free area is used to characterize an area that has no RSU coverage and is covered by the first 5G access network.

[0139] In one possible implementation, in a mobile management device based on computing power services, the first processing module is configured to:

[0140] Encrypt the OBU's permanent user identity SUPI into a privacy protection identity SUCI;

[0141] The OBU registers in the 5G core network based on the SUCI and receives the token generated by the 5G core network;

[0142] The OBU logs into the C-V2X network based on the TOKEN and obtains C-V2X authentication.

[0143] In one possible implementation, a mobile management device based on computing power services is configured to:

[0144] The OBU releases the resources occupied when registering in the 5G core network and obtaining C-V2X authentication.

[0145] Figure 8 This is a hardware structure diagram of the mobile management based on computing power service provided in the embodiment of this application. Figure 8 As shown, the mobile management device 800 based on computing power service includes:

[0146] Processor 81 and memory 82;

[0147] Memory stores computer-executable instructions;

[0148] The processor executes the computer-executable instructions stored in the memory 82, so that the electronic device executes the mobile management method based on computing power service as described above.

[0149] It should be understood that the processor 81 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention can be directly implemented as being executed by a hardware processor, or can be implemented by a combination of hardware and software modules in the processor. The memory 82 may include high-speed random access memory (RAM), and may also include non-volatile memory (NVM), such as at least one disk storage, and can also be a USB flash drive, a mobile hard disk, a read-only memory, a disk or an optical disk, etc.

[0150] An embodiment of the present application also provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement a mobile management method based on computing power services.

[0151] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0152] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A mobile management method based on computing power service, characterized in that: The method is applied to a cellular vehicle-to-everything (C-V2X) network connected to a 5G core network, wherein the C-V2X includes an onboard node OBU and a roadside node RSU. The 5G core network includes a multi-access edge computing (MEC), and the MEC is used to provide the computing power service for the OBU. The mobility management method includes: The OBU registers in the 5G core network and obtains the C-V2X authentication; When the OBU periodically publishes first broadcast information and receives second broadcast information periodically published by a second RSU within a preset time period, determining that the OBU has moved from the area of the first RSU to the area of the second RSU based on the first broadcast information and the second broadcast information; wherein the first broadcast information includes the location information of the OBU, and the second broadcast information includes the location information of the second RSU; The OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC.

2. The mobility management method according to claim 1, wherein: The method further comprises at least one of the following: The OBU accesses the 5G core network based on the RSU and the virtual base station; wherein the virtual base station is connected to at least one of the RSUs in the C-V2X; the virtual base station accesses the 5G core network based on the offload network element of the MEC; The OBU is connected to the 5G core network based on the 5G access network.

3. The mobility management method according to claim 2, wherein: The first RSU and the second RSU belong to the same C-V2X.

4. The mobility management method according to claim 3, wherein: When the computing power connection information indicates that the first RSU and the second RSU are connected to the same virtual base station, and the first RSU and the second RSU correspond to the same MEC, the OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU, including: Establishing a second link from the virtual base station to the second RSU; After determining that the state of the second link is normal, switching the first link to the second link; wherein the first link refers to the link connecting the first RSU and the virtual base station; Release the resources occupied by the first link.

5. The mobility management method according to claim 3, wherein: When the computing power connection information indicates that the first RSU is connected to a first virtual base station, the second RSU is connected to a second virtual base station, and the first virtual base station and the second virtual base station are connected to the same MEC, the OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU, including: Establishing a third link from the second RSU to the MEC via the second virtual base station; After determining that the state of the third link is normal, switching the fourth link to the third link; wherein the fourth link refers to the link connecting the first RSU and the MEC via the first virtual base station; The resources occupied by the fourth link are released.

6. The mobility management method according to claim 2, wherein: The second broadcast information further includes identification information of a second C-V2X to which the second RSU belongs. Determining, based on the first broadcast information and the second broadcast information, that the OBU moves from an area of the first RSU to an area of the second RSU includes: determining, by the OBU, based on the first broadcast information and the second broadcast information, that the OBU moves from an area of the first C-V2X to an area of the second C-V2X; wherein the first C-V2X is an area to which the first RSU belongs, and the computing power connection information indicates that the second RSU belongs to the second C-V2X; The OBU switches the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU, including: switching the computing power service from a first MEC connected to the first C-V2X to a second MEC connected to the second C-V2X.

7. The mobility management method according to claim 6, characterized in that: The computing service runs in the first MEC in a microcontainer manner, and switching the computing service from the first MEC connected to the first C-V2X to the second MEC connected to the second C-V2X includes: Obtaining initialization parameters of the microcontainer of the computing power service in the first MEC; Generate a real-time mirror micro-container of the micro-container of the computing service in the first MEC, and send the real-time mirror micro-container to the second MEC; In the second MEC, the real-time image microcontainer is loaded and started, and the real-time image microcontainer is initialized based on the initialization parameters; The microcontainer data and the real-time mirror microcontainer data of the computing power service are synchronized, and the computing power service is switched from the first MEC connected to the first C-V2X to the second MEC connected to the second C-V2X.

8. The mobility management method according to claim 2, wherein: When the second broadcast information is not received within the preset time period, the method further includes: Determining that the OBU moves from the first RSU area to a first RSU-free area; The computing power service is switched from the first RSU to the first 5G access network based on the first 5G access network; wherein the first RSU-free area is used to characterize an area that is not covered by RSU and is covered by the first 5G access network.

9. The mobility management method according to claim 2, wherein: When the second broadcast information is not received within the preset time period, the method further includes: Determining that the OBU moves from a first RSU-free area to a second RSU-free area; Switch the computing power service from the first 5G access network to the second 5G access network; wherein the first RSU-free area is used to characterize an area that has no RSU coverage and is covered by the first 5G access network; the second RSU-free area is used to characterize an area that has no RSU coverage and is covered by the second 5G access network.

10. The mobility management method according to claim 2, wherein: The method further comprises: When the OBU is within the coverage area of the current RSU, a computing power service request is sent to the MEC through the virtual base station connected to the current RSU based on the current RSU to obtain the computing power service; When the OBU is in a first RSU-free area, a computing power service request is sent to the MEC based on a first 5G access network to obtain the computing power service; wherein the first RSU-free area is used to characterize an area without RSU coverage and covered by the first 5G access network.

11. The mobility management method according to claim 1, wherein the OBU registers with the 5G core network and obtains the C-V2X authentication, comprising: Encrypting the permanent user identity SUPI of the OBU into a privacy protection identity SUCI; The OBU registers in the 5G core network based on the SUCI and receives a token TOKEN generated by the 5G core network; The OBU logs into the C-V2X network based on the TOKEN and obtains the C-V2X authentication.

12. The mobility management method according to claim 11, after the OBU registers in the 5G core network and obtains the C-V2X authentication, comprises: The OBU releases the resources occupied when registering in the 5G core network and obtaining the C-V2X authentication.

13. A mobile management device for computing power services, characterized in that: The device is applied to a cellular vehicle-to-everything (C-V2X) network accessing a 5G core network. The C-V2X includes an onboard node OBU and a roadside node RSU. The 5G core network includes a multi-access edge computing (MEC). The MEC is used to provide the computing power service for the OBU. The device includes: A first processing module is configured to register the OBU in the 5G core network and obtain the C-V2X authentication; A second processing module is configured to determine, when the OBU periodically publishes first broadcast information and receives second broadcast information periodically published by a second RSU within a preset time period, that the OBU moves from the area of the first RSU to the area of the second RSU based on the first broadcast information and the second broadcast information; wherein the first broadcast information includes the location information of the OBU, and the second broadcast information includes the location information of the second RSU; A switching module is used for the OBU to switch the computing power service from the first RSU to the second RSU according to the computing power connection information of the second RSU; wherein the computing power connection information is used to indicate the connection information between the second RSU and the MEC.

14. An electronic device comprising: processor and memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the electronic device performs the method according to any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the mobile management method for computing power services according to any one of claims 1 to 12.

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