Fixed-mobile integrated network communication system and method

Abstract

The present application discloses a fixed-mobile combined network communication system and method. The system includes: an operator edge device running in a metropolitan area network; a user edge device that accesses the user LAN based on the target IP address of the user service; a first communication link based on a wired network and a second communication link based on a wireless network located between the operator edge device and the user edge device, wherein the first communication link runs in the metropolitan area network, and the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network. The present application solves the technical problem in the related art that IP addresses cannot be shared when fixed networks and mobile networks are integrated into a network.

Description

Technical Field

[0001] The present application relates to the field of network communication technology, and in particular to a fixed-mobile integrated network communication system and method. Background Art

[0002] With the development of the digital economy, users who require fixed IP addresses have placed higher reliability demands on operator networks. Traditional wired dual-link active-standby protection can achieve shared fixed IP addresses for user services by setting up two sets of interconnected addresses. However, this approach faces the risk of network interruption caused by issues such as two optical fibers being physically co-routed locally, the central office access being connected to the same router, and IP metropolitan area network system failures. Furthermore, the repair time for wired optical cable failures is difficult to accurately control, making it impossible to fully meet users' business security needs. Furthermore, if traditional fixed and mobile network converged networking protection is adopted, since wired and wireless networks belong to different physical networks and use different address segments, sharing of fixed IP addresses for user services between the wired and wireless networks is impossible, and thus, user business needs cannot be met.

[0003] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0004] The embodiments of the present application provide a fixed-mobile combined network communication system and method to at least solve the technical problem in the related art that IP addresses cannot be shared when fixed networks and mobile networks are integrated into a network.

[0005] According to one aspect of an embodiment of the present application, a fixed-mobile integrated network communication system is provided, comprising: an operator edge device operating in a metropolitan area network; a user edge device accessing the user local area network based on a target IP address of a user service; a first communication link based on a wired network and a second communication link based on a wireless network located between the operator edge device and the user edge device, wherein the first communication link operates in the metropolitan area network, and the second communication link comprises: a first virtual extended local area network tunnel endpoint connected to the user edge device, a second virtual extended local area network tunnel endpoint connected to the operator edge device, and a virtual extended local area network tunnel between the first virtual extended local area network tunnel endpoint and the second virtual extended local area network tunnel endpoint, wherein the virtual extended local area network tunnel is logically isolated from a public network.

[0006] Optionally, the operator edge device includes: a first gateway connected to the first communication link; a second gateway connected to the second communication link; the user edge device includes: a local area network interface connected to the user local area network; a first wide area network interface connected to the first communication link; and a second wide area network interface connected to the second communication link.

[0007] Optionally, the first communication link includes: an optical modem connected to the first wide area network interface; a switch or optical line terminal connected to the optical modem; a data center switch connected to the switch or optical line terminal, and the data center switch is also connected to the first gateway.

[0008] Optionally, in the second communication link, the first virtual extended LAN tunnel endpoint includes: a user premises device connected to the second wide area network interface, wherein the user premises device includes an Internet of Things card, and the Internet of Things card includes identification information for identifying the contracted IP address corresponding to the target data network name; the second virtual extended LAN tunnel endpoint includes: an operator transceiver device connected to the second gateway; a virtual extended LAN tunnel is constructed between the user premises device and the operator transceiver device.

[0009] Optionally, the user front-end equipment is used to connect to the user plane function entity corresponding to the target base station within the target range after power-on, and obtain the contracted IP address corresponding to the target data network name from the user plane function entity based on the identification information; encapsulate the message based on the contracted IP address and the local loopback port address of the operator's transceiver equipment; the operator's transceiver equipment is used to encapsulate the message based on the contracted IP address and the local loopback port address.

[0010] Optionally, the service priority of the first communication link is higher than the service priority of the second communication link.

[0011] Optionally, the user edge device also includes: a first detection module and a first switching module, wherein the first detection module is used to perform network quality analysis and bidirectional forwarding detection on the first communication link to determine whether there is an abnormality in the first communication link; the first switching module is used to switch the uplink traffic transmitted by the user edge device through the first communication link to the second communication link for transmission when there is an abnormality in the first communication link, and is also used to switch the uplink traffic transmitted through the second communication link back to the first communication link for transmission when the first communication link returns to normal; the operator edge device also includes: a second detection module and a second switching module, wherein the second detection module is used to perform network quality analysis and bidirectional forwarding detection on the first communication link to determine whether there is an abnormality in the first communication link; the second switching module is used to switch the downlink traffic transmitted by the operator edge device through the first communication link to the second communication link for transmission when there is an abnormality in the first communication link, and is also used to switch the downlink traffic transmitted through the second communication link back to the first communication link for transmission when the first communication link returns to normal.

[0012] According to another aspect of an embodiment of the present application, a fixed-mobile combined network communication method applied to a user edge device is also provided, including: accessing the user LAN based on the target IP address of the user service; transmitting service traffic with the operator edge device through a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network; when an abnormality occurs in the first communication link, switching the service traffic to a second communication link based on a wireless network, and transmitting service traffic with the operator edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, and a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network.

[0013] Optionally, when the first communication link returns to normal, the service traffic is switched back to the first communication link, and the service traffic is transmitted with the operator edge device through the first communication link.

[0014] According to another aspect of an embodiment of the present application, a non-volatile storage medium is further provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the above-mentioned fixed-mobile combined network communication method by running the computer program.

[0015] In the network communication system of an embodiment of the present application, an operator edge device running in a metropolitan area network and a user edge device accessing the user local area network based on a target IP address of a user service transmit service traffic through a first communication link based on a wired network and a second communication link based on a wireless network, wherein the first communication link runs in the metropolitan area network, and the second communication link is constructed based on virtual extended local area network technology, including: a first virtual extended local area network tunnel endpoint connected to the user edge device, a second virtual extended local area network tunnel endpoint connected to the operator edge device, and a virtual extended local area network tunnel between the first virtual extended local area network tunnel endpoint and the second virtual extended local area network tunnel endpoint. The virtual extended local area network tunnel is logically isolated from the public network, realizing the transparent transmission of second-layer data through a third-layer network, making the wireless network an access extension of the metropolitan area network, so that the user's wired network and wireless network can share the target IP address of the user service, effectively solving the technical problem in the related art that IP addresses cannot be shared when fixed networks and mobile networks are integrated into a network. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of an optional fixed-mobile integrated network communication system according to an embodiment of the present application;

[0018] Figure 2 is a schematic structural diagram of another optional fixed-mobile integrated network communication system according to an embodiment of the present application;

[0019] Figure 3 This is a flow chart of an optional fixed-mobile combined network communication method according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0021] It should be noted that the terms "first", "second", etc. in the specification, claims, and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0022] In order to better understand the embodiments of the present application, some nouns or terms that appear in the description of the embodiments of the present application are first translated and explained as follows:

[0023] Three-layer network: includes core layer, aggregation layer and access layer, which realizes cross-segment communication through IP routing and can cross multiple collision domains.

[0024] Layer 2 network: includes the core layer and the access layer. Within the same collision domain, communication can be achieved through MAC (Media Access Control Address) addressing.

[0025] VXLAN (Virtual Extensible Local Area Network): A network virtualization technology that achieves virtualization by creating a logical network layer on top of an existing physical network. By encapsulating MAC addresses in UDP (User Datagram Protocol) packets, Layer 2 traffic can be tunneled over a Layer 3 network, ensuring that parameters such as IP addresses and MAC addresses in the user's original data remain unchanged. A VXLAN network model typically includes the following components:

[0026] VNI (VXLAN Network Identifier): In a VXLAN network, each virtual network is assigned a 24-bit unique identifier (VNI) to distinguish VXLAN segments. Only terminals with the same VNI can communicate at Layer 2, while terminals with different VNIs are isolated at Layer 2.

[0027] VTEP (VXLAN Tunnel Endpoints): A communication node in a VXLAN network that encapsulates and decapsulates VXLAN packets.

[0028] Virtual Extended LAN Tunnel: A point-to-point logical channel established between two VTEPs for transmitting VXLAN-encapsulated packets.

[0029] SDN (Software Defined Network) controller: The central point for centralized management and control of the VXLAN network, responsible for specifying and configuring components such as VTEPs, tunnels, and VNIs, and managing traffic routing.

[0030] UDP: A connectionless transport layer protocol that does not require establishing and maintaining connections, resulting in fast transmission speeds but no guarantee of data reliability.

[0031] DNN (Data Network Name): An identifier used to support network slicing. In 5G networks, network slicing is used to divide the physical network infrastructure into multiple virtual networks. Each virtual network is identified by a unique DNN. The 5G core network uses this identifier to route traffic to the appropriate network slice.

[0032] UPF (User Plane Function): An important component of the 5G core network architecture, responsible for routing and forwarding user plane data packets in the 5G core network.

[0033] CE (Customer Edge) / PE (Provider Edge) / P (Provider Core) devices: All are routing devices in a wide area network (WAN). A CE router is typically an IP router that establishes an adjacency with a connected PE router and provides users with multi-point service access by connecting to one or more PE routers. A PE router acts as a label edge router, connecting CE routers and P routers. User traffic flows into the user network through the PE router or to the networking backbone through the PE router. A P router is a backbone network routing device, equivalent to a label switching router.

[0034] CPE (Customer Premise Equipment): A terminal device that directly converts broadband signals or mobile network data into Wi-Fi signals.

[0035] NQA (Network Quality Analyzer): A real-time network performance detection and analysis technology that performs statistical analysis on network information such as response time, network jitter, and packet loss rate. It monitors network service quality in real time and enables administrators to quickly locate fault points.

[0036] BFD (Bidirectional Forwarding Detection): A protocol for rapidly detecting link state changes, primarily used between routers in a network. When a node detects a problem with its connection to a neighboring node, BFD immediately notifies all related devices to expedite troubleshooting.

[0037] Example 1

[0038] With the continued deployment of 5G base stations, 5G customized networks are gradually entering large-scale commercial use. In this 5G customized network solution, user-plane functional entities can be deployed down to prefecture-level cities or even user equipment rooms. They can use data network name technology to differentiate data flows and provide wireless access user terminals with dedicated, contracted, fixed IP addresses to meet interconnection needs. Subsequently, user premises equipment can access the customer intranet, identified by a dedicated data network name, and isolate the access channel from the public network, ensuring secure dedicated network access and private data transmission.

[0039] On this basis, the embodiment of the present application first provides a fixed-mobile combined network communication system. Figure 1 is a structural diagram of an optional fixed-mobile combined network communication system according to an embodiment of the present application, such as Figure 1As shown, the system includes at least: an operator edge device 11 running in a metropolitan area network, a user edge device 12 accessing the user local area network based on the target IP address of the user service; a first communication link 13 based on a wired network and a second communication link 14 based on a wireless network located between the operator edge device 11 and the user edge device 12.

[0040] Among them, the first communication link 13 runs in the metropolitan area network, and the second communication link 14 includes: a first virtual extended LAN tunnel endpoint 141 connected to the user edge device 12, a second virtual extended LAN tunnel endpoint 142 connected to the operator edge device 11, and a virtual extended LAN tunnel 143 between the first virtual extended LAN tunnel endpoint 141 and the second virtual extended LAN tunnel endpoint 142, and the virtual extended LAN tunnel 143 is logically isolated from the public network.

[0041] Among them, a user-exclusive wireless communication link is built based on virtual extended LAN technology, which realizes the transparent transmission of second-layer data through the third-layer network, making the wireless network an access extension of the metropolitan area network, so that the user's wired network and wireless network can share the target IP address of the user's service, effectively solving the technical problem in related technologies that IP addresses cannot be shared when fixed networks and mobile networks are integrated into a network.

[0042] exist Figure 1 Based on the network communication system, Figure 2 A more specific structural diagram of a fixed-mobile combined network communication system is shown below. Figure 2 Describe the specific structure and function of each module in the network communication system.

[0043] Optionally, the operator edge device 11 includes: a first gateway 111 connected to the first communication link 13 and a second gateway 112 connected to the second communication link 14; the user edge device 12 includes: a local area network interface 121 connected to the user local area network, a first wide area network interface 122 connected to the first communication link 13, and a second wide area network interface 123 connected to the second communication link 14, wherein the target IP address of the user service is fixed on the local area network interface 121.

[0044] Optionally, the first communication link 13 includes: an optical modem 131 connected to the first wide area network interface 122, which is usually placed on the user side, a switch 132 or an optical line terminal 133 connected to the optical modem 131, and a data center switch 134 connected to the switch 132 or the optical line terminal 133, which is also connected to the first gateway 111.

[0045] Optionally, in the second communication link 14, the first virtual extended LAN tunnel endpoint can be a user premises device 141 connected to the second wide area network interface 123, and the user premises device 141 can have a built-in Internet of Things card, which includes identification information for identifying the contracted IP address corresponding to the target data network name; the second virtual extended LAN tunnel endpoint can be an operator transceiver device 142 connected to the second gateway 112; a virtual extended LAN tunnel 143 is constructed between the user premises device 141 and the operator transceiver device 142.

[0046] As an optional implementation, after being powered on, the user front-end device 141 can first connect to the user plane functional entity corresponding to the target base station within the target range, and obtain the contracted IP address corresponding to the target data network name from the user plane functional entity based on the identification information in the Internet of Things card; then, a virtual extended LAN tunnel 143 is constructed with the user front-end device 141 and the operator transceiver device 142 as two endpoints. The virtual extended LAN tunnel 143 is logically isolated from the public network. The user front-end device 141 encapsulates the message based on the contracted IP address and the local loopback port address of the operator transceiver device 142, and the operator transceiver device 142 also encapsulates the message based on the contracted IP address and the local loopback port address. The two transmit data through the virtual extended LAN tunnel 143, thereby realizing the transparent transmission of the second-layer data through the three-layer network.

[0047] Optionally, considering that the wired network is relatively more stable and secure, in an embodiment of the present application, the service priority of the first communication link 13 is higher than the service priority of the second communication link 14, that is, the first communication link 13 based on the wired network can be used as the main communication link, and the second communication link 14 based on the wireless network can be used as the backup communication link.

[0048] Optionally, the user edge device 12 also includes a first detection module 124 and a first switching module 125, wherein the first detection module 124 is used to perform network quality analysis and bidirectional forwarding detection on the first communication link 13 to determine whether there is an abnormality in the first communication link 13; the first switching module 1125 is used to switch the uplink traffic transmitted by the user edge device 12 through the first communication link 13 to the second communication link 14 for transmission when there is an abnormality in the first communication link 13, and is also used to switch the uplink traffic transmitted through the second communication link 14 back to the first communication link 13 for transmission when the first communication link 13 returns to normal.

[0049] Optionally, the operator edge device 11 also includes a second detection module 113 and a second switching module 114, wherein the second detection module 113 is used to perform network quality analysis and bidirectional forwarding detection on the first communication link 13 to determine whether there is an abnormality in the first communication link 13; the second switching module 114 is used to switch the downlink traffic transmitted by the operator edge device 11 through the first communication link 13 to the second communication link 14 for transmission when there is an abnormality in the first communication link 13, and is also used to switch the downlink traffic transmitted through the second communication link 14 back to the first communication link 13 for transmission when the first communication link 13 returns to normal.

[0050] Among them, combining network quality analysis and two-way forwarding detection technology, and linking with routing protocols, can achieve sub-second rapid switching of communication links during failures. At the same time, the target IP address of user services remains unchanged during the switching process, which can ensure the stability of the business and avoid the system risks of a single network.

[0051] In the network communication system of an embodiment of the present application, an operator edge device running in a metropolitan area network and a user edge device accessing the user local area network based on a target IP address of a user service transmit service traffic through a first communication link based on a wired network and a second communication link based on a wireless network, wherein the first communication link runs in the metropolitan area network, and the second communication link is constructed based on virtual extended local area network technology, including: a first virtual extended local area network tunnel endpoint connected to the user edge device, a second virtual extended local area network tunnel endpoint connected to the operator edge device, and a virtual extended local area network tunnel between the first virtual extended local area network tunnel endpoint and the second virtual extended local area network tunnel endpoint. The virtual extended local area network tunnel is logically isolated from the public network, realizing the transparent transmission of second-layer data through a third-layer network, making the wireless network an access extension of the metropolitan area network, so that the user's wired network and wireless network can share the target IP address of the user service, effectively solving the technical problem in the related art that IP addresses cannot be shared when fixed networks and mobile networks are integrated into a network.

[0052] Example 2

[0053] Based on the operation of the fixed-mobile integrated network communication system provided in Example 1, the embodiment of the present application provides a fixed-mobile integrated network communication method performed by a user edge device. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0054] Figure 3 FIG. 1 is a flow chart of an optional fixed-mobile combined network communication method according to an embodiment of the present application. Figure 3 As shown, the method includes at least steps S302-S306, wherein:

[0055] Step S302, accessing the user's local area network according to the target IP address of the user's service;

[0056] Step S304: Transmitting service traffic with an operator edge device via a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network;

[0057] Step S306: When an abnormality occurs in the first communication link, the service traffic is switched to a second communication link based on the wireless network, and the service traffic is transmitted with the operator edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, and a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network.

[0058] Optionally, when the first communication link returns to normal, the service traffic is switched back to the first communication link, and the service traffic is transmitted with the operator edge device through the first communication link.

[0059] The network communication process of this application solution is described below with reference to specific implementation steps.

[0060] As an optional implementation, the user edge device in the embodiment of the present application adopts a dual WAN + LAN networking mode, is connected to the user LAN through a LAN interface, is connected to the first communication link through a first WAN interface, and is connected to the second communication link through a second WAN interface, wherein the target IP address of the user service is fixed at the LAN interface of the user edge device to ensure that the target IP address of the user service remains unchanged when the communication link is switched.

[0061] Optionally, in the second communication link, the first virtual extended LAN tunnel endpoint may be a user premises device connected to the second wide area network interface, and the user premises device may have a built-in Internet of Things card, which includes identification information for identifying the contracted IP address corresponding to the target data network name; the second virtual extended LAN tunnel endpoint may be an operator transceiver device of a second gateway connected to the operator edge device; a virtual extended LAN tunnel is constructed between the user premises device and the operator transceiver device.

[0062] When building the second communication link, after the user front-end device is powered on, it can first connect to the user plane function entity corresponding to the target base station within the target range, and obtain the contracted IP address corresponding to the target data network name from the user plane function entity based on the identification information in the Internet of Things card; then, a virtual extended LAN tunnel is constructed with the user front-end device and the operator transceiver device as two endpoints. The virtual extended LAN tunnel is logically isolated from the public network. The user front-end device encapsulates the message based on the contracted IP address and the local loopback port address of the operator transceiver device. The operator transceiver device also encapsulates the message based on the contracted IP address and the local loopback port address. The two transmit data through the virtual extended LAN tunnel, thereby realizing the transparent transmission of second-layer data through the third-layer network.

[0063] Taking into account the relative stability and security of wired networks, in an embodiment of the present application, the service priority of the first communication link is higher than the service priority of the second communication link, that is, the first communication link based on the wired network can be used as the main communication link, and the second communication link based on the wireless network can be used as the backup communication link. Under normal circumstances, user service traffic is only transmitted on the main communication link.

[0064] Optionally, the user edge device can monitor the communication status of the first communication link in real time through network quality analysis and two-way forwarding detection technology. When an abnormality is detected in the first communication link, the uplink traffic transmitted through the first communication link can be switched to the second communication link for transmission; the operator edge device is usually also equipped with network quality analysis and two-way forwarding detection functions. When an abnormality is detected in the first communication link, the route publication on the first communication link can be revoked through route linkage, and the downlink traffic can be switched to the second communication link for transmission.

[0065] Optionally, when the first communication link returns to normal, the user edge device and the operator edge device can resume routing for the first communication link, automatically switching back service traffic. The target IP address of the user service remains unchanged during the active / standby switchover process, allowing the target IP address of the user service to be shared between the wired and wireless networks, ensuring that services are not affected.

[0066] In an embodiment of the present application, the user edge device first accesses the user LAN based on the target IP address of the user service; then transmits service traffic with the operator edge device through a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network; when an abnormality occurs in the first communication link, the service traffic is switched to a second communication link based on a wireless network, and the service traffic is transmitted with the operator edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network. In which, a user-exclusive wireless communication link is constructed based on the virtual extended LAN technology, which realizes the transparent transmission of layer 2 data across the three-layer network, making the wireless network an access extension of the metropolitan area network, so that the user's wired network and wireless network can share the target IP address of the user service, effectively solving the technical problem in the related art that the IP address cannot be shared when the fixed network and the mobile network are integrated into a network.

[0067] Example 3

[0068] According to an embodiment of the present application, a non-volatile storage medium is further provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the fixed-mobile combined network communication method in Example 2 by running the computer program.

[0069] Specifically, the device where the non-volatile storage medium is located implements the following steps by running the computer program: accessing the user local area network according to the target IP address of the user service; transmitting service traffic with the operator edge device through a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network; when an abnormality occurs in the first communication link, switching the service traffic to a second communication link based on a wireless network, and transmitting service traffic with the operator edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, and a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network.

[0070] According to an embodiment of the present application, a processor is further provided, which is used to run a computer program, wherein the fixed-mobile integrated network communication method in Example 2 is executed when the computer program is run.

[0071] Specifically, when the computer program is running, the following steps are executed: accessing the user local area network according to the target IP address of the user service; transmitting service traffic with the operator edge device through a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network; when an abnormality occurs in the first communication link, switching the service traffic to a second communication link based on a wireless network, and transmitting service traffic with the operator edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, and a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network.

[0072] According to an embodiment of the present application, an electronic device is further provided, comprising: a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the fixed-mobile integrated network communication method in Example 2 through the computer program.

[0073] Specifically, the processor is configured to execute the following steps through a computer program: accessing the user LAN according to the target IP address of the user service; transmitting service traffic with the operator edge device through a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network; when an abnormality occurs in the first communication link, switching the service traffic to a second communication link based on a wireless network, and transmitting service traffic with the operator edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the operator edge device, a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, and the virtual extended LAN tunnel is logically isolated from the public network.

[0074] The serial numbers of the above embodiments are for description only and do not represent the advantages or disadvantages of the embodiments.

[0075] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0076] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0077] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0078] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0079] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program code.

[0080] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A fixed-mobile combined network communication system, characterized in that: The system is used to transparently transmit Layer 2 data across a Layer 3 network, allowing the wireless network to serve as an access extension of the metropolitan area network, and allowing the user's wired network and wireless network to share the target IP address of the user's service; the system includes: Carrier edge devices running on metropolitan area networks; A user edge device that accesses the user's local area network according to the target IP address of the user service; A first communication link based on a wired network and a second communication link based on a wireless network are located between the provider edge device and the customer edge device, wherein the first communication link operates in the metropolitan area network, and the second communication link includes: a first virtual extended local area network tunnel endpoint connected to the customer edge device, a second virtual extended local area network tunnel endpoint connected to the provider edge device, and a virtual extended local area network tunnel between the first virtual extended local area network tunnel endpoint and the second virtual extended local area network tunnel endpoint, wherein the virtual extended local area network tunnel is logically isolated from the public network; The user edge device includes: a local area network interface connected to the user local area network; a first wide area network interface connected to the first communication link; and a second wide area network interface connected to the second communication link.

2. The system according to claim 1, wherein: The operator edge device includes: a first gateway connected to the first communication link; and a second gateway connected to the second communication link.

3. The system according to claim 2, characterized in that The first communication link includes: an optical modem connected to the first wide area network interface; A switch or optical line terminal connected to the optical modem; A data center switch connected to the switch or the optical line terminal, wherein the data center switch is also connected to the first gateway.

4. The system according to claim 2, wherein: In the second communication link, The first virtual extended LAN tunnel endpoint includes: a user premises device connected to the second wide area network interface, wherein the user premises device includes an Internet of Things card, and the Internet of Things card includes identification information for identifying the contracted IP address corresponding to the target data network name; The second virtual extended LAN tunnel endpoint includes: an operator transceiver device connected to the second gateway; The virtual extended LAN tunnel is constructed between the user premise equipment and the operator's transceiver equipment.

5. The system according to claim 4, characterized in that The user front-end device is used to connect to the user plane function entity corresponding to the target base station within the target range after power-on, and obtain the contracted IP address corresponding to the target data network name from the user plane function entity according to the identification information; It is also used to encapsulate the message according to the contracted IP address and the local loopback port address of the operator's transceiver device; The operator's transceiver device is used to perform message encapsulation according to the contracted IP address and the local loopback interface address.

6. The system according to claim 1, wherein: The service priority of the first communication link is higher than the service priority of the second communication link.

7. The system according to claim 6, characterized in that The user edge device further includes: a first detection module and a first switching module, wherein the first detection module is used to perform network quality analysis and bidirectional forwarding detection on the first communication link to determine whether the first communication link has an abnormality; the first switching module is used to switch the uplink traffic transmitted by the user edge device through the first communication link to the second communication link for transmission when the first communication link has an abnormality, and is also used to switch the uplink traffic transmitted through the second communication link back to the first communication link for transmission when the first communication link returns to normal; The operator edge device also includes: a second detection module and a second switching module, wherein the second detection module is used to perform network quality analysis and bidirectional forwarding detection on the first communication link to determine whether there is an abnormality in the first communication link; the second switching module is used to switch the downlink traffic transmitted by the operator edge device through the first communication link to the second communication link for transmission when there is an abnormality in the first communication link, and is also used to switch the downlink traffic transmitted through the second communication link back to the first communication link for transmission when the first communication link returns to normal.

8. A fixed-mobile combined network communication method, applied to a user edge device, characterized in that: The method is used to transparently transmit Layer 2 data across a Layer 3 network, so that the wireless network serves as an access extension of the metropolitan area network, and the user's wired network and wireless network share the target IP address of the user's service; the method comprises: Accessing the user's LAN based on the target IP address of the user's service; Transmitting service traffic with an operator edge device via a first communication link based on a wired network, wherein the operator edge device and the first communication link operate in a metropolitan area network; When an abnormality occurs in the first communication link, the service traffic is switched to a second communication link based on a wireless network, and the service traffic is transmitted with the provider edge device through the second communication link, wherein the second communication link includes: a first virtual extended LAN tunnel endpoint connected to the user edge device, a second virtual extended LAN tunnel endpoint connected to the provider edge device, and a virtual extended LAN tunnel between the first virtual extended LAN tunnel endpoint and the second virtual extended LAN tunnel endpoint, wherein the virtual extended LAN tunnel is logically isolated from the public network; wherein the user edge device includes: a local area network interface connected to the user local area network; a first wide area network interface connected to the first communication link; and a second wide area network interface connected to the second communication link.

9. The method according to claim 8, characterized in that The method further comprises: When the first communication link returns to normal, the service traffic is switched back to the first communication link, and the service traffic is transmitted with the operator edge device through the first communication link.

10. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the network communication method according to claim 8 or claim 9 by running the computer program.

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