Lightweight routing method supporting networking application of low-speed satellite communication terminal equipment

Abstract

The invention discloses a lightweight routing method supporting networking application of low-speed satellite communication terminal equipment, which comprises the following steps of: periodically reporting routing information to a routing service unit through the low-speed satellite communication terminal equipment, updating and maintaining the routing information of all the low-speed satellite communication terminal equipment by the routing service unit, and realizing routing convergence of the routing service unit. When the satellite communication terminal equipment needs service communication, the routing service unit can provide routing query service for the satellite communication terminal equipment. And the source equipment obtains routing information of the target equipment by inquiring the equipment identification number of the target equipment or reachable network information, and carries out service forwarding through the routing information. The lightweight routing method is suitable for satellite communication terminal equipment with limited hardware resources and limited communication capability, solves the problem of high link overhead of a traditional access routing protocol, and meets the requirements of rapid convergence, simplicity, practicability and the like of the access routing.

Description

Technical Field

[0001] The present invention relates to the field of satellite communications, and in particular to a lightweight routing method supporting networking applications of low-speed satellite communication terminal equipment. Background Art

[0002] Low-speed satellite communication terminals are critical for connecting remote areas, oceans, aviation, and other regions beyond the reach of ground base stations. Through direct connections to satellites, they can meet the periodic data transmission needs of agriculture, forestry, and energy sectors. Their low power consumption and long battery life make them suitable for long-term deployment in uninhabited areas or harsh environments, filling communication coverage gaps. Their simplified design, limited hardware resources, low production costs, and low unit price make them suitable for large-scale deployment, supporting large-scale IoT applications and ensuring emergency and secure communications during natural disasters or when ground networks fail.

[0003] Due to communication speed and capacity limitations, low-speed terminals typically use narrowband communication technologies, which cannot meet high bandwidth requirements and also limit the amount of data transmitted. Overly complex routing algorithms hinder rapid routing convergence. When routing frames are too long or contain excessive redundant information, a single frame occupies the channel for an extended period, affecting transmission latency. Various routing protocols have been proposed for existing terrestrial networks, but traditional routing protocols face a conflict between protocol overhead and bandwidth, resulting in low protocol efficiency and complex algorithms. Summary of the Invention

[0004] The technical problem solved by the present invention is: in view of the contradiction between low link rate and fast convergence of low-speed satellite communication terminals, a lightweight routing method supporting the networking application of low-speed satellite communication terminal equipment is provided, which solves the problem of high link overhead of traditional access routing protocols while meeting the fast convergence of access routing.

[0005] The technical solution of the present invention is to provide a lightweight routing method supporting the networking application of low-speed satellite communication terminal equipment, including:

[0006] Each low-speed satellite communication terminal device registers node information with the routing service unit; the node information includes a device identification number and reachable network information;

[0007] The routing service unit performs routing maintenance; the routing maintenance method is as follows: the routing service unit receives node information, performs authority authentication, obtains the forwarding port of the node information of the low-speed satellite communication terminal device that passes the authority authentication, and updates and maintains the reachable network information and forwarding port corresponding to the device identification number of the low-speed satellite communication terminal device;

[0008] Before business communication, the source low-speed satellite communication terminal device initiates a routing query request to the routing service unit; the routing service unit obtains the forwarding port of the destination device by querying the reachable network information or device identification number of the destination low-speed satellite communication terminal device and returns it as the query result; the source low-speed satellite communication terminal device uses the query result to forward business information.

[0009] Furthermore, the device identification number is unique; the reachable network information is the ground network segment IP address for accessing the satellite network through the low-speed satellite communication terminal device; the reachable network information corresponding to a device identification number includes one or more of the ground network segment IP addresses.

[0010] Furthermore, the node information registration method is: if the node information of the low-speed satellite communication terminal device has not changed, the node information is periodically registered with the service unit to maintain the validity of the node information in the routing service unit; if the node information of the low-speed satellite communication terminal device changes, a node information update is immediately triggered, and then the node information is reported periodically.

[0011] Furthermore, the update and maintenance method is as follows: if the low-speed satellite communication terminal device fails to report node information periodically within the specified period, the routing service unit deletes the node information of the low-speed satellite communication terminal device; if the reachable network information or forwarding port of the terminal device node changes, the routing service unit will overwrite the original information with the latest reachable network information and forwarding port.

[0012] The present invention also provides a lightweight routing system supporting low-speed satellite communication terminal equipment networking applications, comprising:

[0013] Low-speed satellite communication terminal equipment, used to register node information with the routing service unit; the node information includes the device identification number and reachable network information; used to initiate a routing query request to the routing service unit before service communication; used to forward service information based on the query result;

[0014] The routing service unit is used to perform routing maintenance; the routing maintenance method is as follows: receiving node information, performing authority authentication, obtaining the forwarding port of the node information of the low-speed satellite communication terminal device that passes the authority authentication, and updating and maintaining the reachable network information and forwarding port corresponding to the device identification number of the low-speed satellite communication terminal device; used for routing query; the routing query method is as follows: obtaining the forwarding port of the destination device by querying the reachable network information or device identification number of the destination device, and returning the query result to the applied low-speed satellite communication terminal device.

[0015] Furthermore, the device identification number is unique; the reachable network information is the ground network segment IP address for accessing the satellite network through the low-speed satellite communication terminal device; the reachable network information corresponding to a device identification number includes one or more of the ground network segment IP addresses.

[0016] Furthermore, the node information registration method is: if the node information of the low-speed satellite communication terminal device has not changed, the node information is periodically registered with the service unit to maintain the validity of the node information in the routing service unit; if the node information of the low-speed satellite communication terminal device changes, a node information update is immediately triggered, and then the node information is reported periodically.

[0017] Furthermore, the update and maintenance method is as follows: if the low-speed satellite communication terminal device fails to report node information periodically within the specified period, the routing service unit deletes the node information of the low-speed satellite communication terminal device; if the reachable network information or forwarding port of the terminal device node changes, the routing service unit will overwrite the original information with the latest reachable network information and forwarding port.

[0018] The present invention also provides an on-board computing terminal, characterized in that it comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the above-described method when executing the computer program.

[0019] The present invention also provides a computer program product, characterized in that: when the computer program product is executed by a processor, the steps of the method described above are implemented.

[0020] The advantages of the present invention compared with the prior art are:

[0021] The present invention implements routing convergence by enabling low-speed satellite communication terminal devices to periodically report routing information to a routing service unit. The routing service unit then updates and maintains the routing information for all low-speed satellite communication terminal devices. When satellite communication terminal devices are communicating, the routing service unit provides a routing query service. A source device can query a destination device to obtain the destination device's routing information at the routing service unit and use this routing information to forward traffic. This lightweight routing method is suitable for satellite communication terminal devices with limited hardware resources and limited communication capabilities. It addresses the high link overhead of traditional access routing protocols while ensuring rapid access routing convergence. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Flow chart of the method of the present invention. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present invention, the specific implementation methods of the present invention are described below.

[0024] The present invention proposes a lightweight routing method that supports low-speed satellite communication terminal equipment networking applications. The low speed mainly refers to the transmission scenario where the communication rate is below 19.2Kbps. The process is as follows: Figure 1 As shown, the following steps are included:

[0025] Step 1: Routing registration: each low-speed Satcom terminal device registers its node information with the routing service unit.

[0026] Specifically, if the terminal device node information has not changed, this information is reported periodically to maintain the validity of the routing service unit information. If the reachable network information of the terminal device changes, a node information update is immediately triggered, and the node information is subsequently reported periodically.

[0027] In particular, the node information of the present invention includes the device identification number of the low-speed satellite communication terminal device and the reachable network information. The low-speed satellite communication terminal device has a device identification number that is unique in the entire network, and the reachable network information can be the ground network segment IP address through which the terminal device accesses the satellite network.

[0028] Step 2: Routing maintenance: the routing service unit receives node information, performs authority authentication, obtains the forwarding port of the node information of the low-speed satellite communication terminal device that passes the authority authentication, and updates and maintains the reachable network information and forwarding port corresponding to the device identification number of the low-speed satellite communication terminal device.

[0029] Specifically, if the low-speed satellite communication terminal device does not re-report the node information within the garbage time limit, the routing service unit will delete the node information of the low-speed satellite communication terminal device; if the reachable network information or forwarding port of the terminal device node changes, the routing service unit will overwrite the original information with the latest reachable network information and forwarding port.

[0030] Step 3: Route query. Before service communication, the low-speed satellite communication terminal device initiates a route query request to the routing service unit. The routing service unit obtains the forwarding port of the destination device by querying the reachable network information or device identification number of the destination device and returns it as the query result. The low-speed satellite communication terminal device uses the query result to forward service information.

[0031] Step 4: Route cancellation: When the low-speed satellite communication terminal device exits the network, it initiates a route cancellation application to the routing service unit; the routing service unit retrieves and cancels all reachable network information of the terminal device based on the device identification number.

[0032] The present invention also provides a lightweight routing system that supports low-speed satellite communication terminal equipment networking applications. The specific functions of the system are implemented according to the above method, including:

[0033] Low-speed Satcom terminal equipment, used to register node information with the routing service unit; the node information includes the device identification number and reachable network information; used for the low-speed Satcom terminal equipment to initiate a routing query request to the routing service unit before service communication; used for forwarding service information based on the query result;

[0034] The routing service unit is used to perform routing maintenance; the routing maintenance method is as follows: receiving node information, performing authority authentication, obtaining the forwarding port of the node information of the low-speed satellite communication terminal device that passes the authority authentication, and updating and maintaining the reachable network information and forwarding port corresponding to the device identification number of the low-speed satellite communication terminal device; used for routing query; the routing query method is as follows: obtaining the forwarding port of the destination device by querying the reachable network information or device identification number of the destination device, and returning the query result to the applied low-speed satellite communication terminal device.

[0035] It will be understood that the present invention is described by way of example, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and any embodiment that falls within the scope of the claims of this application is intended to be within the scope of protection of the present invention.

[0036] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A lightweight routing method supporting low-speed satellite communication terminal equipment networking applications, characterized in that: include: Each low-speed satellite communication terminal device registers node information with the routing service unit; the node information includes a device identification number and reachable network information; The routing service unit performs routing maintenance; The routing maintenance method is as follows: the routing service unit receives node information, performs authority authentication, obtains the forwarding port of the node information of the low-speed satellite communication terminal device that passes the authority authentication, and updates and maintains the reachable network information and forwarding port corresponding to the device identification number of the low-speed satellite communication terminal device; Before service communication, the source low-speed satellite communication terminal device initiates a routing query request to the routing service unit; The routing service unit obtains the forwarding port of the destination device by querying the reachable network information or device identification number of the destination low-speed satellite communication terminal device and returns it as the query result; the source low-speed satellite communication terminal device uses the query result to forward business information.

2. The lightweight routing method supporting low-speed satellite communication terminal equipment networking application according to claim 1 is characterized in that: The device identification number is unique; the reachable network information is the ground network segment IP address for accessing the satellite network through the low-speed satellite communication terminal device; the reachable network information corresponding to a device identification number includes one or more ground network segment IP addresses.

3. The lightweight routing method supporting low-speed satellite communication terminal equipment networking application according to claim 1 is characterized in that: The node information registration method is as follows: if the node information of the low-speed satellite communication terminal device has not changed, the node information is periodically registered with the service unit to maintain the validity of the node information in the routing service unit; if the node information of the low-speed satellite communication terminal device changes, a node information update is immediately triggered, and then the node information is reported periodically.

4. The lightweight routing method supporting low-speed satellite communication terminal equipment networking application according to claim 1, characterized in that: The update and maintenance method is as follows: if the low-speed satellite communication terminal device fails to report node information periodically within the specified period, the routing service unit deletes the node information of the low-speed satellite communication terminal device; if the reachable network information or forwarding port of the terminal device node changes, the routing service unit will overwrite the original information with the latest reachable network information and forwarding port.

5. A lightweight routing system supporting low-speed satellite communication terminal equipment networking applications, characterized in that: include: A low-speed satellite communication terminal device is used to register node information with the routing service unit; the node information includes a device identification number and reachable network information; Used to initiate a routing query request to the routing service unit before business communication; used to forward business information based on the query results; Routing service unit, used for performing routing maintenance; The routing maintenance method is as follows: receiving node information, performing authority authentication, obtaining the forwarding port of the node information of the low-speed satellite communication terminal device that passes the authority authentication, updating and maintaining the reachable network information and forwarding port corresponding to the device identification number of the low-speed satellite communication terminal device; used for routing query; the routing query method is as follows: obtaining the forwarding port of the destination device by querying the reachable network information or device identification number of the destination device, and returning the query result to the applied low-speed satellite communication terminal device.

6. The lightweight routing system supporting low-speed satellite communication terminal equipment networking application according to claim 5, characterized in that: The device identification number is unique; the reachable network information is the ground network segment IP address for accessing the satellite network through the low-speed satellite communication terminal device; the reachable network information corresponding to a device identification number includes one or more ground network segment IP addresses.

7. The lightweight routing system supporting low-speed satellite communication terminal equipment networking application according to claim 5 is characterized by: The node information registration method is as follows: if the node information of the low-speed satellite communication terminal device has not changed, the node information is periodically registered with the service unit to maintain the validity of the node information in the routing service unit; if the node information of the low-speed satellite communication terminal device changes, a node information update is immediately triggered, and then the node information is reported periodically.

8. The lightweight routing system supporting low-speed satellite communication terminal equipment networking application according to claim 5, characterized in that: The update and maintenance method is as follows: if the low-speed satellite communication terminal device fails to report node information periodically within the specified period, the routing service unit deletes the node information of the low-speed satellite communication terminal device; if the reachable network information or forwarding port of the terminal device node changes, the routing service unit will overwrite the original information with the latest reachable network information and forwarding port.

9. An onboard computing terminal, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the steps of the method according to any one of claims 1 to 4 are implemented when the processor executes the computer program.

10. A computer program product, characterized in that: When the computer program product is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

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