Communication method, device, and computer-readable storage medium

Abstract

The present application discloses a communication method, device, and computer-readable storage medium. The communication method includes: obtaining a communication mode for a service to be forwarded; when the communication mode is an optical fiber communication mode, performing a first encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to a fixed-mobile converged service gateway via a segmented routing SR tunnel, so that the fixed-mobile converged service gateway determines the communication link for the service to be forwarded based on the encapsulation information of the service to be forwarded; when the communication mode is a base station network communication mode, performing a second encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to a fixed-mobile converged service gateway via a general routing encapsulation GRE tunnel, so that the fixed-mobile converged service gateway determines the communication link for the service to be forwarded based on the encapsulation information of the service to be forwarded. The present application can use different communication modes and communication tunnels to forward services based on fixed-mobile convergence technology, thereby improving the reliability of dedicated line communications.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, device, and computer-readable storage medium. Background Art

[0002] In existing technologies, carrier communications are typically implemented using fiber-optic transport networks or base station networks. However, transport networks rely on the extent of fiber optic deployment to sites. Without such deployment, dedicated line services are unsuitable. Compared to fiber-optic transport networks, base station networks are significantly affected by environmental factors such as base station coverage, signal strength, and surrounding electromagnetic interference. Furthermore, bandwidth is often limited, and latency is unstable, making it difficult to guarantee a high-bandwidth, low-latency experience. Consequently, existing dedicated line communications suffer from low reliability. Summary of the Invention

[0003] The embodiments of the present application aim to solve the problem of low reliability of existing dedicated line communications by providing a communication method, apparatus, and computer-readable storage medium.

[0004] To achieve the above objectives, the present application provides, on one hand, a communication method, which is applied to a fixed-mobile convergence device. The fixed-mobile convergence device includes a base station access module and a transport network access module. The base station access module is used to access a base station network, and the transport network access module is used to access a fiber optic network. The method includes:

[0005] Obtaining the communication method of the service to be forwarded;

[0006] When the communication mode is an optical fiber communication mode, performing a first encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to a fixed-mobile convergence service gateway through a segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines a communication link for the service to be forwarded based on encapsulation information of the service to be forwarded;

[0007] When the communication mode is a base station network communication mode, the service to be forwarded is secondly encapsulated, and the encapsulated service to be forwarded is sent to the fixed-mobile convergence service gateway through the general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded.

[0008] Optionally, the step of performing a first encapsulation on the service to be forwarded includes:

[0009] Obtain a segment routing SR label, and perform a first encapsulation on the service to be forwarded according to the segment routing SR label;

[0010] The step of performing a second encapsulation on the service to be forwarded includes:

[0011] Acquiring header information of an Internet Protocol (IP), and performing a second encapsulation on the service to be forwarded according to the header information of the Internet Protocol (IP);

[0012] Alternatively, the service to be forwarded is secondly encapsulated according to the segment routing SR label and the header information of the Internet interconnection protocol IP, wherein a target communication link of the service to be forwarded is determined according to the SR label and the header information, and the service to be forwarded is forwarded to a target fixed-mobile convergence device through the target communication link.

[0013] Optionally, before the step of obtaining the communication mode of the service to be forwarded, the step includes:

[0014] Establishing the segment routing (SR) tunnel between the fixed-mobile convergence device and the fixed-mobile convergence service gateway;

[0015] The Generic Routing Encapsulation (GRE) tunnel is established between the fixed-mobile convergence device and the fixed-mobile convergence service gateway.

[0016] Optionally, the step of obtaining the communication mode of the service to be forwarded includes:

[0017] Detecting a path status of a communication link, where the communication link includes a working link and a protection link, the working link performs communication based on a fiber optic network and includes the segment routing (SR) tunnel, and the protection link performs communication based on a base station network and includes the general routing encapsulation (GRE) tunnel;

[0018] When detecting that the working link is in a connected state, determining that the communication mode of the service to be forwarded is the optical fiber communication mode;

[0019] When detecting that the working link is in a disconnected state and the protection link is in a connected state, determining that the communication mode of the service to be forwarded is the base station network communication mode;

[0020] When it is detected that the working link is in a disconnected state and the protection link is in a connected state, protection switching is triggered to switch the working link to the protection link.

[0021] In addition, to achieve the above-mentioned purpose, the present application further provides a communication method applied to a fixed-mobile converged service gateway, the method comprising:

[0022] Receive services to be forwarded from a Segment Routing (SR) tunnel or a Generic Routing Encapsulation (GRE) tunnel;

[0023] Acquiring encapsulation information of the service to be forwarded, and determining a target communication link for the service to be forwarded according to the encapsulation information;

[0024] The to-be-forwarded service is sent to a target fixed-mobile convergence device according to the target communication link.

[0025] Optionally, the step of determining the target communication link of the service to be forwarded according to the encapsulation information includes:

[0026] When the encapsulation information is a segment routing (SR) label, determining a working link as the target communication link;

[0027] When the encapsulation information is header information of an Internet Protocol (IP), determining a protection link as the target communication link;

[0028] When the encapsulation information is the segment routing (SR) label and header information of the Internet Protocol (IP), a working link is determined as the target communication link, wherein the working link communicates based on a fiber optic network and includes the segment routing (SR) tunnel, and the protection link communicates based on a base station network and includes the general routing encapsulation (GRE) tunnel.

[0029] Optionally, after the step of determining the protection link as the target communication link, the step of sending the to-be-forwarded service to the target fixed-mobile convergence device according to the target communication link includes:

[0030] receiving forwarding path label information of the service to be forwarded sent by the controller;

[0031] determining a target forwarding path for the service to be forwarded in the target communication link according to the forwarding path label information, and sending the service to be forwarded to the target fixed-mobile convergence device according to the target forwarding path;

[0032] The controller determines the forwarding path label information of the service to be forwarded based on the topology information and adjacency information of the communication link sent by the fixed-mobile converged service gateway; or obtains the topology information and the adjacency information based on the configuration information of the communication link, and determines the forwarding path label information of the service to be forwarded based on the topology information and the adjacency information.

[0033] In addition, to achieve the above-mentioned purpose, the present application further provides a communication device, which includes an acquisition module, a first sending module, and a second sending module, wherein:

[0034] The acquisition module is used to acquire the communication mode of the service to be forwarded;

[0035] The first sending module is configured to, when the communication mode is an optical fiber communication mode, perform a first encapsulation on the service to be forwarded, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines a communication link for the service to be forwarded based on the encapsulation information of the service to be forwarded;

[0036] The second sending module is configured to, when the communication mode is a base station network communication mode, perform a second encapsulation on the service to be forwarded, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded;

[0037] Alternatively, the communication device includes a receiving module, a determining module, and a third sending module, wherein:

[0038] The receiving module is used to receive the to-be-forwarded service sent by the Segment Routing (SR) tunnel or the General Routing Encapsulation (GRE) tunnel;

[0039] The determining module is configured to obtain encapsulation information of the service to be forwarded, and determine a target communication link of the service to be forwarded according to the encapsulation information;

[0040] The third sending module is configured to send the service to be forwarded to a target fixed-mobile convergence device according to the target communication link.

[0041] In addition, to achieve the above-mentioned purpose, the present application also provides a communication device on the other hand, which includes a memory, a processor, and a communication program stored in the memory and running on the processor, and when the processor executes the communication program, it implements the steps of the communication method described above.

[0042] In addition, to achieve the above-mentioned purpose, the present application further provides a computer-readable storage medium on the other hand, on which a communication program is stored, and when the communication program is executed by a processor, the steps of the above-mentioned communication method are implemented.

[0043] The present application proposes a communication method, which obtains the communication mode of the service to be forwarded; when the communication mode is an optical fiber communication mode, performs a first encapsulation on the service to be forwarded, and sends the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a segmented routing SR tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded; when the communication mode is a base station network communication mode, performs a second encapsulation on the service to be forwarded, and sends the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded. The present application can adopt different communication modes and communication tunnels to forward services based on fixed-mobile convergence technology, thereby improving the reliability of dedicated line communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present application;

[0045] Figure 2 This is a flow chart of the first embodiment of the communication method of the present application;

[0046] Figure 3 This is a flow chart of the second embodiment of the communication method of the present application;

[0047] Figure 4 This is a schematic diagram of the structure of the fixed-mobile convergence device and the fixed-mobile convergence service gateway for this application;

[0048] Figure 5 This application is a schematic diagram of an unprotected link networking scenario;

[0049] Figure 6 This application is a schematic diagram of a networking scenario with a protection link;

[0050] Figure 7 Schematic diagram of the networking scenario of fixed-mobile converged networking technology 1 of this application;

[0051] Figure 8 This is a schematic diagram of the networking scenario of the fixed-mobile converged networking technology 2 of this application;

[0052] Figure 9 A schematic diagram of a module of the communication device of the present application;

[0053] Figure 10 FIG. 2 is another schematic diagram of a module of the communication device of the present application.

[0054] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0056] The main solution of the embodiment of the present application is: obtaining the communication mode of the service to be forwarded; when the communication mode is an optical fiber communication mode, performing a first encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a segmented routing SR tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded; when the communication mode is a base station network communication mode, performing a second encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded.

[0057] Because the transmission network relies on the extent of fiber optic laying to the site, if the fiber is not laid to the site, it cannot adapt to the dedicated line service. Base station networks are greatly affected by environmental factors such as base station network coverage, signal strength, and surrounding electromagnetic interference. Bandwidth is often limited and latency is unstable, making it difficult to ensure a high-bandwidth, low-latency experience. Therefore, the reliability of existing dedicated line communications is low.

[0058] This application obtains the communication mode of the service to be forwarded; when the communication mode is the optical fiber communication mode, the service to be forwarded is first encapsulated, and the encapsulated service to be forwarded is sent to the fixed-mobile convergence service gateway through the segmented routing SR tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded; when the communication mode is the base station network communication mode, the service to be forwarded is secondly encapsulated, and the encapsulated service to be forwarded is sent to the fixed-mobile convergence service gateway through the general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded. This application can adopt different communication modes and communication tunnels to forward services based on the fixed-mobile convergence technology, thereby improving the reliability of dedicated line communication.

[0059] like Figure 1 As shown, Figure 1 This is a schematic diagram of the terminal device structure of the hardware operating environment involved in the embodiment of the present application.

[0060] like Figure 1As shown, the terminal device may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001.

[0061] Those skilled in the art will understand that Figure 1 The terminal device structure shown in the figure does not constitute a limitation on the terminal device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0062] like Figure 1 As shown, the memory 1005 as a computer-readable storage medium may include a communication program.

[0063] exist Figure 1 In the terminal device shown, the network interface 1004 is mainly used for data communication with the backend server; the user interface 1003 is mainly used for data communication with the client (user end); when the terminal is a fixed-mobile convergence device, the processor 1001 can be used to call the communication program in the memory 1005 and perform the following operations:

[0064] Obtaining the communication method of the service to be forwarded;

[0065] When the communication mode is an optical fiber communication mode, performing a first encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to a fixed-mobile convergence service gateway through a segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines a communication link for the service to be forwarded based on encapsulation information of the service to be forwarded;

[0066] When the communication mode is a base station network communication mode, the service to be forwarded is secondly encapsulated, and the encapsulated service to be forwarded is sent to the fixed-mobile convergence service gateway through the general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded.

[0067] When the terminal is a fixed-mobile converged service gateway, the processor 1001 may be configured to call a communication program in the memory 1005 and perform the following operations:

[0068] Receive services to be forwarded from a Segment Routing (SR) tunnel or a Generic Routing Encapsulation (GRE) tunnel;

[0069] Acquiring encapsulation information of the service to be forwarded, and determining a target communication link for the service to be forwarded according to the encapsulation information;

[0070] The to-be-forwarded service is sent to a target fixed-mobile convergence device according to the target communication link.

[0071] refer to Figure 2 , Figure 2 This is a flow chart of the first embodiment of the communication method of the present application.

[0072] An embodiment of the present application provides a communication method. It should be noted that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from that shown here.

[0073] The communication method of this embodiment is applied to a fixed-mobile convergence device, which includes a base station access module and a transport network access module. The base station access module is used to access a base station network, and the transport network access module is used to access a fiber optic network. The method includes the following steps:

[0074] Step S10, obtaining the communication mode of the service to be forwarded;

[0075] It should be noted that the communication system of this application includes a controller, a fixed-mobile convergence device (i.e., an integrated fixed-mobile convergence device), and a fixed-mobile convergence service gateway. The controller can be an existing controller system in the existing network, but with the addition of a management and control section related to fixed-mobile convergence services to the existing control system, or an app for this function. At the same time, the controller of this application has big data processing and correlation analysis capabilities. Combined with the full network topology, it can achieve rapid cross-network E2E service deployment, service SLA management and perception, and provide rapid service fault location and demarcation capabilities.

[0076] The fixed-mobile convergence integrated device and the fixed-mobile convergence service gateway can be the same device or different device types, can be plug-in devices or fixed devices, and can also adopt different chassis designs. They are linked to each other through the control system.

[0077] refer to Figure 4 , Figure 4This is a structural diagram of the fixed-mobile convergence device and the fixed-mobile convergence service gateway of this application. The fixed-mobile convergence integrated device and the fixed-mobile convergence service gateway are mainly composed of a data plane, a control plane, and a management plane. Among them, the data plane mainly includes service access, OAM detection (Operation Administration and Maintenance) & APS protection (Automatic Protection Switching), base station access module (for accessing the base station network), transmission network access module (for accessing the optical fiber network), etc., as well as functional modules such as user side ports and network side ports. At the same time, the main functions of the data plane include access message identification, flow classification, service path encapsulation, decapsulation, flow marking, flow statistics, service path OAM detection, service primary and backup path APS protection switching and other various processing. The control plane includes functional modules such as network topology routing, control signaling and resource management. The management plane is used to implement network element level and network level configuration management, fault management, performance management, security management and other functions. The data plane connects to other devices using the User Interface (UNI) and Network Interface (NNI) interfaces. The management and control planes connect to the network management and control systems using management and control interfaces, respectively. The fixed-mobile convergence service gateway serves as both the service gateway and the management and control gateway for the fixed-mobile convergence device.

[0078] Furthermore, there are multiple combinations of fixed-mobile convergence networking scenarios in this application. From the perspective of whether there is a protection link service path, it can be divided into two categories: unprotected link networking scenarios and protected link networking scenarios. Figure 5 , Figure 5 This application is a schematic diagram of an unprotected link networking scenario, which includes three sub-scenarios: base station network to base station network, base station network to transport network, and transport network to transport network. Figure 6 , Figure 6 The present application is a schematic diagram of a networking scenario with a protection link. The networking scenarios with a protection link include working and protection links are both base station network to base station network, working and protection links are both transmission network to transmission network, working and protection links are both base station network to transmission network, working link is base station network to base station network & protection link is transmission network to transmission network, working link is transmission network to transmission network & protection link is transmission network to transmission network, etc., wherein the protection link and the working link form a protection group.

[0079] Because different communication modes correspond to different communication links, when a fixed-mobile convergence device forwards services, it is necessary to determine the communication mode of the services to be forwarded. Communication modes include optical fiber communication and base station network communication. Communication links include a working link (i.e., a primary link) and a protection link (i.e., a backup link). The working link communicates over an optical fiber network and includes a segment routing (SR) tunnel, while the protection link communicates over a base station network and includes a general routing encapsulation (GRE) tunnel. In one embodiment, the fixed-mobile convergence device initiates real-time OAM connectivity detection on the service path. When the working link is detected to be connected, the services to be forwarded are sent over the working link. Since the working link forwards services over the transport network (optical fiber network), the communication mode of the services to be forwarded can be determined to be optical fiber communication. When the working link is detected to be disconnected but the protection link is connected, this indicates an abnormality in the working link. In this case, the services to be forwarded need to be sent over the protection link. Since the protection link forwards services over the base station network (i.e., the base station mobile network), the communication mode of the services to be forwarded can be determined to be the base station network communication.

[0080] In order to improve the reliability of the service, in the event of a link interruption, the service needs to be switched to the backup link within 50ms to ensure that the service is not interrupted. Based on this, an automatic protection switching APS protection mechanism is proposed. In one embodiment, when it is detected that the working link is in a disconnected state, the APS protection switching is started, and the working link is switched to the protection link or from the main link to the backup link. For example, if three messages are not received continuously on the working link, it means that the working link is in a disconnected state. At this time, if it is detected that the protection link is in a connected state, the APS protection switching is started to ensure the normal forwarding of the service. Among them, since the air interface resources of the base station need to be consumed when forwarding the service using the protection link, thereby increasing the cost, therefore, when both the working link and the protection link are in a connected state, the working link is used by default to forward the service.

[0081] Step S20: When the communication mode is an optical fiber communication mode, first encapsulate the service to be forwarded, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines the communication link for the service to be forwarded based on the encapsulation information of the service to be forwarded.

[0082] When it is determined that the communication mode of the service to be forwarded is the optical fiber communication mode, the service to be forwarded is sent through the working link. Since the working link adopts the SR (segment routing) label to forward the service, it is necessary to perform the first encapsulation of the service to be forwarded when sending the service to be forwarded. In one embodiment, a segment routing SR label is obtained, and then the service to be forwarded is first encapsulated according to the segment routing SR label. For example, a segment list (Segment List) with an order is encapsulated into the tunnel in the message header at the head node of the data message corresponding to the service to be forwarded to instruct the node (router, host or device) that receives the service to be forwarded how to forward and process the service to be forwarded. The encapsulated service to be forwarded is further sent to the fixed-mobile convergence service gateway through the segment routing SR tunnel. After receiving the service to be forwarded, the fixed-mobile convergence service gateway obtains the encapsulation information of the service to be forwarded, that is, decompresses the service to be forwarded to obtain the segment routing SR label, and then determines the communication link of the service to be forwarded according to the segment routing SR label.

[0083] In one embodiment, before forwarding services, a segmented routing SR tunnel (including three SR tunnel technologies: MPLS SR, SR-TP, and SRv6) is established between the fixed-mobile convergence device and the fixed-mobile convergence service gateway. For example, taking SR-TP as an example, the SR-TP tunnel is used for connection-oriented, point-to-point service carrying, and provides connection-based end-to-end monitoring and operation capabilities. SR-TP tunnel creation includes tunnel configuration and tunnel establishment. Before the SR-TP tunnel is created, it is necessary to establish an IS-IS neighbor relationship between each forwarder, and an IS-IS or BGP-LS neighbor relationship between the forwarder and the controller to achieve network layer interoperability, complete label allocation and network topology information collection, and send the label and network topology information to the controller for the controller to perform path calculation.

[0084] Optionally, the fixed-mobile convergence integrated device uses bidirectional forwarding detection (BFD) to perform tunnel connectivity detection on IP / GRE tunnels and SRv6 tunnels. For example, the fixed-mobile convergence integrated device detects whether a link quality event occurs based on the link quality information carried in the received BFD message. Link quality problems such as packet loss anomalies, disorder anomalies, jitter anomalies, and / or delay anomalies can be detected based on the link quality information carried in the received BFD message, and a link quality parameter value is obtained based on the link quality event. If the link quality parameter value exceeds a preset link quality threshold, it indicates that the link is abnormal. At this time, it is necessary to switch the communication tunnel. Secondly, MPLS-TP and MPLS SR (including SR-TP) use the OAM mechanism (G.8113.1) of the MPLS-TP system and the APS protection protocol that collaborates between BFD and MPLS-TP OAM. MPLS is Multi-Protocol Label Switching (MPLS).

[0085] Step S30, when the communication mode is a base station network communication mode, performs a second encapsulation on the service to be forwarded, and sends the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded.

[0086] When it is determined that the communication mode of the service to be forwarded is the base station network communication mode, the service to be forwarded is sent through the protection link. Since the protection link uses the General Routing Encapsulation (GRE) tunnel to forward the service, it is necessary to perform a second encapsulation on the service to be forwarded when sending the service to be forwarded. In one embodiment, Internet Protocol (IP) header information is obtained, and a second encapsulation is performed on the service to be forwarded based on the Internet Protocol (IP) header information. For example, IP header information is obtained, including the configuration of the IP source address and IP destination address, and then the IP header information is encapsulated in the data packet corresponding to the service to be forwarded. The data packet is further sent to the fixed-mobile convergence service gateway through the General Routing Encapsulation (GRE) tunnel. After receiving the data packet of the service to be forwarded, the fixed-mobile convergence service gateway decapsulates the header layer by layer, reads the protocol parameters, and then determines the communication path of the service to be forwarded based on the protocol parameters.

[0087] In one embodiment, to reduce transmission costs, a segment routing (SR) label and Internet Protocol (IP) header information can be used to perform a secondary encapsulation of the service to be forwarded. For example, the segment routing (SR) label is first encapsulated in the data packet of the service to be forwarded, followed by the IP header information. The encapsulated data packet is then sent to the fixed-mobile convergence service gateway via a general routing encapsulation (GRE) tunnel. After receiving the data packet of the service to be forwarded, the fixed-mobile convergence service gateway decapsulates the first layer and obtains the segment routing (SR) label, enabling label-based forwarding of the service to be forwarded.

[0088] In one embodiment, before forwarding services, an IP / GRE tunnel is established between the base station air interface of the fixed-mobile convergence device and the interface of the fixed-mobile convergence service gateway connected to the core network. An L2 VPN (Layer 2 VPN) or L3 VPN (Layer 3 VPN) is carried in the IP / GRE tunnel. For example, when a GRE tunnel needs to be established on a network device, the source address, destination address, and tunnel name of the GRE tunnel are obtained. The tunnel name is unique on the network device. Then, a GRE tunnel establishment request is sent to the network device. The GRE tunnel establishment request carries the source address, destination address, and tunnel name, so that the network device establishes a GRE tunnel corresponding to the source address, destination address, and tunnel name.

[0089] The dedicated line networking solution for this application has the following advantages:

[0090] By building a system with multiple modules (transmission network access module + base station access module + convergence module + converged primary and backup link detection and protection switching + controller), cross-network multi-scenario dedicated line transport is realized. In addition, fixed-mobile convergence is combined with the detection of primary and backup service paths and reliability protection switching of the dedicated lines carried on the transmission network and base station network.

[0091] The base station network or transport network can serve as the primary service path, a backup route, or be used independently. Furthermore, the base station network and transport network can be integrated to form an E2E service path, and multiple service paths can be combined to form a primary and backup service path for connectivity detection and reliability protection switching.

[0092] Compared with the dedicated line networking technology of the transmission network, this application can quickly open services when the optical fiber does not reach the station, and can also provide service primary and backup link disconnection detection and reliability protection when the optical fiber reaches the station. Compared with the dedicated line networking technology of the base station network, this application can use the stable optical fiber channel of the transmission network to provide service bandwidth guarantee. At the same time, compared with the SLA detection method of segment-by-segment network splicing of the two networking technologies of the base station network and the transmission network, this application can realize E2E service SLA detection of the cross-networking technology of the base station network and the transmission network, presenting the most realistic service bearer network performance.

[0093] Further, refer to Figure 3 , a second embodiment of the communication method of this application is proposed.

[0094] The communication method is applied to a fixed-mobile converged service gateway, and the method includes:

[0095] Step S40: receiving a service to be forwarded sent by a segment routing (SR) tunnel or a general routing encapsulation (GRE) tunnel;

[0096] The fixed-mobile convergence service gateway can receive the to-be-forwarded service sent by the fixed-mobile convergence device through an SR tunnel or a general routing encapsulation GRE tunnel.

[0097] Step S50, obtaining encapsulation information of the service to be forwarded, and determining a target communication link for the service to be forwarded according to the encapsulation information;

[0098] When the fixed-mobile converged service gateway receives the service to be forwarded, it decapsulates the service to be forwarded to obtain encapsulation information, and then determines the target communication link for the service to be forwarded based on the encapsulation information. In one embodiment, when the encapsulation information is a segment routing (SR) label, the working link is determined as the target communication link. In this case, the fixed-mobile converged service gateway sends the service to be forwarded via a wired method (optical fiber network). When the encapsulation information is header information of the Internet Protocol (IP), the protection link is determined as the target communication link. In this case, the fixed-mobile converged service gateway sends the service to be forwarded via a wireless method (base station network). When the encapsulation information is a segment routing (SR) label and header information of the Internet Protocol (IP), the working link is determined as the target communication link. In this case, the fixed-mobile converged service gateway sends the service to be forwarded via a wired method (optical fiber network). Since the segment routing (SR) label is encapsulated first and the Internet Protocol (IP) header information is encapsulated later, the fixed-mobile converged service gateway obtains the segment routing (SR) label when decapsulating the service. In this way, the service can be directly forwarded using the label, that is, the service is forwarded using a wired method. The working link communicates based on an optical fiber network and includes a segment routing (SR) tunnel, while the protection link communicates based on a base station network and includes a general routing encapsulation (GRE) tunnel.

[0099] Step S60: Send the service to be forwarded to a target fixed-mobile convergence device according to the target communication link.

[0100] After determining the target communication link for the service to be forwarded, the fixed-mobile convergence service gateway directly sends the service to be forwarded to the target fixed-mobile convergence device based on the target link. For example, if the target communication link is a working link, the service to be forwarded is sent to the target fixed-mobile convergence device based on the working link; if the target communication link is a protection link, the service to be forwarded is sent to the target fixed-mobile convergence device based on the protection link.

[0101] When using a protection link to send services to be forwarded, a forwarding path must also be determined. In one embodiment, the forwarding path label information of the services to be forwarded is received from the controller. Since the forwarding path label information carries the ingress and egress node information of the SR path, the fixed-mobile converged service gateway can directly determine the target forwarding path (SR path) of the services to be forwarded based on the forwarding path label information and then send the services to be forwarded based on the target forwarding path. The SR path is an ordered list of network segments connecting an SR ingress node to an SR egress node.

[0102] The controller determines the forwarding path label information for the service to be forwarded based on the topology and adjacency information of the communication link. This information can be obtained in two ways: First, the fixed-mobile converged service gateway reports the topology and adjacency information to the controller; second, the controller obtains the topology and adjacency information based on the configuration information of the communication link.

[0103] This application uses the collaborative splicing of base station networks and transport network service paths. The IP / GRE tunnels provided by the base station network serve as adjacent segments or adjacent binding segments of SR (SRv6 or MPLS SR) to form a seamless SR network with the transport network. Through controller collaboration, rapid deployment of E2E SR-TE paths and service link path optimization are achieved.

[0104] In order to better illustrate the communication method of this application, this application adopts two fixed-mobile converged networking technologies for networking.

[0105] refer to Figure 7 , Figure 7 Schematic diagram of the networking scenario of fixed-mobile converged networking technology 1 of this application;

[0106] In this embodiment, an IP / GRE tunnel is established between the base station air interface of the FMC device and the core network interface of the FMC service gateway. Layer 2 or Layer 3 VPN is carried within the IP / GRE tunnel. VPN bridging between the IP / GRE tunnel and an MPLS tunnel or SR tunnel (including MPLS SR, SR-TP, and SRv6) is then performed at the FMC service gateway to implement service forwarding from the base station network to the transport network (or vice versa).

[0107] In fixed-mobile convergence networking technology 1, cross-tunnel protection groups involving IP / GRE tunnels and SR tunnels are involved. Generally, IP / GRE and SRv6 tunnels use BFD for tunnel connectivity detection. MPLS-TP and MPLS SR (including SR-TP) use the MPLS-TP system's OAM mechanism (G.8113.1) and the APS protection protocol, which collaborates between BFD and MPLS-TP OAM.

[0108] Further, refer to Figure 8 , Figure 8 This is a schematic diagram of the networking scenario of the fixed-mobile converged networking technology 2 of this application;

[0109] In this embodiment, an IP / GRE tunnel is established between the base station air interface of the FMC device and the core network interface of the FMC service gateway. The IP / GRE tunnel is treated as an adjacent segment or binding segment of the MPLS / SR tunnel. The FMC service gateway then performs adjacency label processing to connect the IP / GRE tunnel to the MPLS tunnel or SR tunnel (including MPLS SR, SR-TP, and SRv6), completing tunnel label forwarding from the base station network to the transport network (or vice versa).

[0110] In fixed-mobile convergence networking technology 2, IP / GRE tunnels are used as adjacent segments or binding segments of SR tunnels. Adjacent segment allocation and controller collaboration can be achieved in two ways.

[0111] Method 1: Run the Interior Gateway Protocol (IGP) over the IP / GRE tunnel, collect link topology information and segments through the IGP, and then send it to the controller via BGP-LS (BGP Link-state). BGP-LS collects network topology information and summarizes the topology information collected by the IGP protocol and sends it to the upper-layer controller. The controller collects the overall topology information and segments of the transport network and base station network. This allows the controller to calculate SRv6-TE / SR-TE / SR-TP paths and connect SRv6-TE / SR-TE / SR-TP tunnels to the FMC device and FMC service gateway.

[0112] Method 2: A controller configures IP / GRE tunnel adjacency or binding segments on the device for data plane use. The controller combines the topology information (TOP) and segments collected from the transport network with the links and segments configured in the IP / GRE tunnel to create a comprehensive SR path calculation TOP and segment information covering the base station network (IP / GRE tunnel adjacency segments) and the transport network. This allows the controller to calculate SRv6-TE / SR-TE / SR-TP paths and deploy SRv6-TE / SR-TE / SR-TP tunnels to the FMC device and FMC service gateway. This networking technology implements E2E (end-to-end) SR tunneling and does not involve OAM detection or protection groups across IP / GRE and SR tunnel types.

[0113] Both networking technologies offer E2E VPN services and support in-band OAM (In-Band Operational Module) technology for E2E traffic flows. This technology presents E2E service-level agreement (SLA) performance information on the controller, which can be used for service operations and maintenance, path optimization, and fault location and demarcation.

[0114] This application utilizes a transport network access module + base station network access module + converged module + converged primary and backup link detection and protection to achieve rapid provisioning of dedicated lines in any networking scenario and reliable protection of dedicated line primary and backup links. This allows multiple networking technologies, previously separated and limited to their respective technical advantages within their limited scenarios, to truly achieve multi-scenario dedicated line transport. Furthermore, this application will combine limited network conditions to achieve rapid provisioning of services in base station network access scenarios and high-reliability primary and backup link detection and protection for the convergence of fixed and mobile transport networks and base station networks.

[0115] In addition, the present application also provides a communication device, which includes a memory, a processor, and a communication program stored in the memory and running on the processor, and when the processor executes the communication program, the steps of the communication method described above are implemented.

[0116] Further, refer to Figure 9 The communication device 100 includes an acquisition module 10, a first sending module 20 and a second sending module 30, wherein:

[0117] The acquisition module 10 is used to obtain the communication mode of the service to be forwarded;

[0118] The first sending module 20 is configured to, when the communication mode is an optical fiber communication mode, perform a first encapsulation on the service to be forwarded, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines a communication link for the service to be forwarded based on the encapsulation information of the service to be forwarded;

[0119] The second sending module 30 is used to perform a second encapsulation on the service to be forwarded when the communication mode is a base station network communication mode, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded.

[0120] Furthermore, the first sending module 20 includes a first packaging unit;

[0121] The first encapsulation unit is configured to obtain a segment routing SR label and perform a first encapsulation on the service to be forwarded according to the segment routing SR label;

[0122] The second sending module 30 includes a second packaging unit;

[0123] The second encapsulation unit is used to obtain header information of the Internet interconnection protocol IP and perform a second encapsulation on the to-be-forwarded service according to the header information of the Internet interconnection protocol IP;

[0124] The second encapsulation unit is further configured to perform a second encapsulation on the service to be forwarded based on the segment routing (SR) label and the header information of the Internet Protocol (IP), wherein a target communication link for the service to be forwarded is determined based on the SR label and the header information, and the service to be forwarded is forwarded to a target fixed-mobile convergence device through the target communication link.

[0125] Furthermore, the acquisition module 10 includes an establishment unit;

[0126] The establishing unit is configured to establish the segment routing (SR) tunnel between the fixed-mobile convergence device and the fixed-mobile convergence service gateway;

[0127] The establishing unit is further configured to establish the Generic Routing Encapsulation (GRE) tunnel between the fixed-mobile convergence device and the fixed-mobile convergence service gateway.

[0128] Furthermore, the acquisition module 10 further includes a detection unit and a determination unit;

[0129] The detection unit is configured to detect a path status of a communication link, wherein the communication link includes a working link and a protection link, wherein the working link communicates based on a fiber optic network and includes the segment routing (SR) tunnel, and the protection link communicates based on a base station network and includes the generic routing encapsulation (GRE) tunnel;

[0130] The determining unit is configured to determine that the communication mode of the service to be forwarded is the optical fiber communication mode when detecting that the working link is in a connected state;

[0131] The determining unit is further configured to, when detecting that the working link is in a disconnected state and the protection link is in a connected state, determine that the communication mode of the service to be forwarded is the base station network communication mode;

[0132] When it is detected that the working link is in a disconnected state and the protection link is in a connected state, protection switching is triggered to switch the working link to the protection link.

[0133] Further, refer to Figure 10 , the communication device 100 includes a receiving module 40, a determining module 50 and a third sending module 60, wherein:

[0134] The receiving module 40 is configured to receive a service to be forwarded sent by a segment routing (SR) tunnel or a general routing encapsulation (GRE) tunnel;

[0135] The determining module 50 is configured to obtain encapsulation information of the service to be forwarded and determine a target communication link of the service to be forwarded according to the encapsulation information;

[0136] The third sending module 60 is configured to send the service to be forwarded to a target fixed-mobile convergence device according to the target communication link.

[0137] Furthermore, the determining module 50 is further configured to determine a working link as the target communication link when the encapsulation information is a segment routing (SR) label;

[0138] The determining module 50 is further configured to determine a protection link as the target communication link when the encapsulation information is header information of an Internet Protocol (IP);

[0139] The determination module 50 is further configured to, when the encapsulation information is the segment routing (SR) label and the header information of the Internet Protocol (IP), determine a working link as the target communication link, wherein the working link communicates based on a fiber optic network and includes the segment routing (SR) tunnel, and the protection link communicates based on a base station network and includes the general routing encapsulation (GRE) tunnel.

[0140] Furthermore, the third sending module 60 includes a receiving unit and a third sending unit;

[0141] The receiving unit is configured to receive the forwarding path label information of the service to be forwarded sent by the controller;

[0142] The third sending unit is configured to determine a target forwarding path for the service to be forwarded in the target communication link based on the forwarding path label information, and send the service to be forwarded to the target fixed-mobile convergence device based on the target forwarding path; wherein the controller determines the forwarding path label information of the service to be forwarded based on the topology information and adjacency information of the communication link sent by the fixed-mobile convergence service gateway; or obtains the topology information and the adjacency information based on the configuration information of the communication link, and determines the forwarding path label information of the service to be forwarded based on the topology information and the adjacency information.

[0143] The implementation of the functions of each module of the above-mentioned communication device is similar to the process in the above-mentioned method embodiment, and will not be described in detail here.

[0144] In addition, the present application also provides a computer-readable storage medium, on which a communication method program is stored. When the communication method program is executed by a processor, the steps of the above communication method are implemented.

[0145] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0146] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0147] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0148] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0149] It should be noted that in the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claim. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The present application may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0150] Although the optional embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the optional embodiments and all changes and modifications that fall within the scope of the present application.

[0151] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The communication method is applied to a fixed-mobile convergence device, which includes a base station access module and a transport network access module. The base station access module is used to access a base station network, and the transport network access module is used to access an optical fiber network. The method includes: Detecting a path status of a communication link, where the communication link includes a working link and a protection link, where the working link communicates over a fiber optic network and includes a segment routing (SR) tunnel, and the protection link communicates over a base station network and includes a general routing encapsulation (GRE) tunnel; When detecting that the working link is in a connected state, determining that the communication mode of the service to be forwarded is an optical fiber communication mode; When detecting that the working link is in a disconnected state and the protection link is in a connected state, determining that the communication mode of the service to be forwarded is a base station network communication mode; When it is detected that the working link is in a disconnected state and the protection link is in a connected state, protection switching is triggered to switch the working link to the protection link; When the communication mode is an optical fiber communication mode, performing a first encapsulation on the service to be forwarded, and sending the encapsulated service to be forwarded to a fixed-mobile convergence service gateway through the segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines a communication link for the service to be forwarded based on encapsulation information of the service to be forwarded; When the communication mode is a base station network communication mode, the service to be forwarded is secondly encapsulated, and the encapsulated service to be forwarded is sent to the fixed-mobile convergence service gateway through the general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded.

2. The communication method according to claim 1, wherein: The step of performing a first encapsulation on the service to be forwarded includes: Obtain a segment routing SR label, and perform a first encapsulation on the service to be forwarded according to the segment routing SR label; The step of performing a second encapsulation on the service to be forwarded includes: Acquiring header information of an Internet Protocol (IP), and performing a second encapsulation on the service to be forwarded according to the header information of the Internet Protocol (IP); Alternatively, the service to be forwarded is secondly encapsulated according to the segment routing SR label and the header information of the Internet interconnection protocol IP, wherein a target communication link of the service to be forwarded is determined according to the SR label and the header information, and the service to be forwarded is forwarded to a target fixed-mobile convergence device through the target communication link.

3. The communication method according to claim 1, wherein: Before the step of detecting the path status of the communication link, the method includes: Establishing the segment routing (SR) tunnel between the fixed-mobile convergence device and the fixed-mobile convergence service gateway; The Generic Routing Encapsulation (GRE) tunnel is established between the fixed-mobile convergence device and the fixed-mobile convergence service gateway.

4. A communication method, characterized in that: The communication method is applied to a fixed-mobile converged service gateway, and the method includes: Receive services to be forwarded from a Segment Routing (SR) tunnel or a Generic Routing Encapsulation (GRE) tunnel; Obtaining encapsulation information of the service to be forwarded, and when the encapsulation information is a segment routing (SR) label, determining a working link as a target communication link; When the encapsulation information is header information of an Internet Protocol (IP), determining a protection link as the target communication link; When the encapsulation information is the segment routing (SR) label and the header information of the Internet Protocol (IP), determining a working link as the target communication link, wherein the working link communicates based on a fiber network and includes the segment routing (SR) tunnel, and the protection link communicates based on a base station network and includes the general routing encapsulation (GRE) tunnel; The to-be-forwarded service is sent to a target fixed-mobile convergence device according to the target communication link.

5. The communication method according to claim 4, wherein: After the step of determining the protection link as the target communication link, the step of sending the to-be-forwarded service to the target fixed-mobile convergence device according to the target communication link includes: receiving forwarding path label information of the service to be forwarded sent by the controller; determining a target forwarding path for the service to be forwarded in the target communication link according to the forwarding path label information, and sending the service to be forwarded to the target fixed-mobile convergence device according to the target forwarding path; The controller determines the forwarding path label information of the service to be forwarded based on the topology information and adjacency information of the communication link sent by the fixed-mobile converged service gateway; or obtains the topology information and the adjacency information based on the configuration information of the communication link, and determines the forwarding path label information of the service to be forwarded based on the topology information and the adjacency information.

6. A communication device, characterized in that: The communication device includes an acquisition module, a first sending module and a second sending module, wherein: The acquisition module is configured to detect the path status of a communication link, where the communication link includes a working link and a protection link, the working link communicating based on a fiber optic network and including a segmented routing (SR) tunnel, and the protection link communicating based on a base station network and including a general routing encapsulation (GRE) tunnel; when detecting that the working link is in a connected state, determining that the communication mode of the service to be forwarded is a fiber optic communication mode; when detecting that the working link is in a disconnected state and the protection link is in a connected state, determining that the communication mode of the service to be forwarded is a base station network communication mode; wherein, when detecting that the working link is in a disconnected state and the protection link is in a connected state, triggering protection switching to switch the working link to the protection link; The first sending module is configured to, when the communication mode is an optical fiber communication mode, perform a first encapsulation on the service to be forwarded, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through the segment routing (SR) tunnel, so that the fixed-mobile convergence service gateway determines a communication link for the service to be forwarded based on the encapsulation information of the service to be forwarded; The second sending module is configured to, when the communication mode is a base station network communication mode, perform a second encapsulation on the service to be forwarded, and send the encapsulated service to be forwarded to the fixed-mobile convergence service gateway through a general routing encapsulation GRE tunnel, so that the fixed-mobile convergence service gateway determines the communication link of the service to be forwarded according to the encapsulation information of the service to be forwarded; Alternatively, the communication device includes a receiving module, a determining module, and a third sending module, wherein: The receiving module is used to receive the to-be-forwarded service sent by the Segment Routing (SR) tunnel or the General Routing Encapsulation (GRE) tunnel; The determination module is configured to obtain encapsulation information of the service to be forwarded, and when the encapsulation information is a segment routing (SR) label, determine a working link as a target communication link; when the encapsulation information is header information of an Internet Protocol (IP), determine a protection link as the target communication link; and when the encapsulation information is the segment routing (SR) label and the header information of the Internet Protocol (IP), determine a working link as the target communication link, wherein the working link communicates based on a fiber optic network and includes the segment routing (SR) tunnel, and the protection link communicates based on a base station network and includes the general routing encapsulation (GRE) tunnel. The third sending module is configured to send the service to be forwarded to a target fixed-mobile convergence device according to the target communication link.

7. A communication device, characterized in that: The communication device includes a memory, a processor, and a communication program stored in the memory and running on the processor. When the processor executes the communication program, the steps of the method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a communication program, which implements the steps of the method according to any one of claims 1 to 5 when executed by a processor.

Images