A satellite communication inter-site switching and traffic scheduling method based on attribution

Abstract

The present invention discloses a satellite communication cross-site switching and traffic scheduling method based on attribution, which relates to the field of satellite communication technology. The present invention realizes the perception of the landing path of the user satellite terminal based on network measurement; and realizes the path replanning and traffic redirection of inter-site services by reconfiguring the tunnel diversion strategy through centralized control. The present invention can realize the automatic switching of user satellite terminals between different ground stations, as well as the dynamic replanning and traffic redirection of inter-site paths after the dynamic selection of the service landing station. It has the advantages of supporting subnet mobility and automated switching control of end-to-end outbound paths, and can improve the application and automation level of satellite communication networks.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication technology, and in particular to a satellite communication inter-station switching and flow scheduling method based on attribution. Background Art

[0002] With the rapid development of commercial space and the increasing popularity of satellite applications, the demand for satellite communication systems to access terrestrial networks and the internet is exploding, and traffic bandwidth is increasing. Satellite communication system ground stations, serving as the gateway for user satellite terminals to access the terrestrial network and the internet, are the bottleneck and convergence point for the entire system. Distributed networking, using multiple ground stations deployed across multiple locations, can achieve load balancing for satellite user terminal services and provide backup switching in the event of a single point of failure at a ground station. Therefore, the use of multi-point networking to construct inter-station networks among satellite communication system ground stations is a critical infrastructure for future satellite communication systems to provide external communication services. Research is urgently needed to implement inter-station network switching and traffic scheduling for user satellite terminal services, ensuring high-quality user service continuity. Summary of the Invention

[0003] In light of this, the present invention proposes a method for inter-site handover and traffic scheduling in satellite communications based on attribution. This method enables automatic handover of user satellite terminals between different ground stations, as well as dynamic replanning of inter-site paths and traffic redirection after the dynamic selection of service landing stations. It supports subnet mobility and automated handover control of end-to-end outbound paths, potentially improving the application and automation level of satellite communication networks.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A satellite communication inter-site handover and traffic scheduling method based on attribution, the method comprising:

[0006] S1, configures a home ground station for the user satellite terminal based on management, geography and resource-based home policies, and initializes the home route from the user satellite terminal to the home ground station;

[0007] S2, pre-configures mutually reachable mesh tunnels between ground stations for transferring traffic between stations;

[0008] S3: A network measurement mechanism is enabled between the user satellite terminal and its home ground station and other landing stations to monitor the path connectivity between the user satellite terminal and the ground station in real time.

[0009] S4: If the network measurement detects that the path to the home ground station is connected, the service data of the user satellite terminal accessing the terrestrial network / Internet is routed to the home ground station through the home router and completed outbound. The service data of the terrestrial network / Internet accessing the user satellite terminal is forwarded to the user satellite terminal through the home station of the user satellite terminal.

[0010] S5. If the network measurement detects that the path to the home ground station is disconnected or the path transmission quality is lower than a certain threshold, the centralized control unit switches the home route of the user satellite terminal to other landing stations, or the user satellite terminal actively switches the home route to other landing stations. At the same time, the centralized control unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station, and forwards the service data of the user satellite terminal that lands through other landing stations to the original home station through the inter-station tunnel for outbound network.

[0011] Furthermore, the centralized control unit maintains the correspondence between all user satellite terminals and their home ground stations, as well as the service routing information of all user satellite terminals, and can obtain network measurement results between all user satellite terminals and ground stations.

[0012] Furthermore, the service data of the user satellite terminal that lands through other landing stations can choose to go out of the local network or return to the original home station for outgoing network according to the outgoing network strategy configured by the current landing station for the user satellite terminal.

[0013] Furthermore, the centralized control unit maintains the service routing information of all user satellite terminals. When network measurement detects that the path to the home station is disconnected or the path transmission quality is lower than a certain threshold, different service flows can be transferred to different landing stations according to the flow-based routing strategy to achieve service sharing between different ground stations. The centralized controller unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station based on the flow-based routing strategy to achieve switching and traffic scheduling based on the service flow granularity.

[0014] Furthermore, the centralized control unit maintains the service routing information of all user satellite terminals. When the network measurement detects that the path to the home ground station is disconnected or the path transmission quality is lower than a certain threshold, the services of different user satellite terminals can be transferred to different landing stations according to the routing strategy based on the user satellite terminal, thereby realizing service sharing between different user satellite terminals among different ground stations. The centralized controller unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station based on the station routing strategy, thereby realizing switching and traffic scheduling based on the granularity of the user satellite terminal.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0016] The present invention can realize automatic switching of user satellite terminals between different ground stations, as well as dynamic replanning of inter-station paths and traffic redirection after dynamic selection of service landing stations. It has the advantages of supporting subnet mobility and automatic switching control of end-to-end outbound paths, and can improve the application and automation level of satellite communication networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a flowchart of a satellite communication inter-site switching and traffic scheduling method based on attribution disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] A satellite communication inter-site switching and traffic scheduling method based on attribution, such as Figure 1 As shown, the method includes:

[0020] S1, configures a home ground station for the user satellite terminal based on management, geography and resource-based home policies, and initializes the home route from the user satellite terminal to the home ground station;

[0021] S2, pre-configures mutually reachable mesh tunnels between ground stations for transferring traffic between stations;

[0022] S3: A network measurement mechanism is enabled between the user satellite terminal and its home ground station and other landing stations to monitor the path connectivity between the user satellite terminal and the ground station in real time.

[0023] S4: If the network measurement detects that the path to the home ground station is connected, the service data of the user satellite terminal accessing the terrestrial network / Internet is routed to the home ground station through the home router and completed outbound. The service data of the terrestrial network / Internet accessing the user satellite terminal is forwarded to the user satellite terminal through the home station of the user satellite terminal.

[0024] S5. If the network measurement detects that the path to the home ground station is disconnected or the path transmission quality is lower than a certain threshold, the centralized control unit switches the home route of the user satellite terminal to other landing stations, or the user satellite terminal actively switches the home route to other landing stations. At the same time, the centralized control unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station, and forwards the service data of the user satellite terminal that lands through other landing stations to the original home station through the inter-station tunnel for outbound network.

[0025] Furthermore, the centralized control unit maintains the correspondence between all user satellite terminals and their home ground stations, as well as the service routing information of all user satellite terminals, and can obtain network measurement results between all user satellite terminals and ground stations.

[0026] Furthermore, the service data of the user satellite terminal that lands through other landing stations can choose to go out of the local network or return to the original home station for outgoing network according to the outgoing network strategy configured by the current landing station for the user satellite terminal.

[0027] Furthermore, the centralized control unit maintains the service routing information of all user satellite terminals. When network measurement detects that the path to the home station is disconnected or the path transmission quality is lower than a certain threshold, different service flows can be transferred to different landing stations according to the flow-based routing strategy to achieve service sharing between different ground stations. The centralized controller unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station based on the flow-based routing strategy to achieve switching and traffic scheduling based on the service flow granularity.

[0028] Furthermore, the centralized control unit maintains the service routing information of all user satellite terminals. When the network measurement detects that the path to the home ground station is disconnected or the path transmission quality is lower than a certain threshold, the services of different user satellite terminals can be transferred to different landing stations according to the routing strategy based on the user satellite terminal, thereby realizing service sharing between different user satellite terminals among different ground stations. The centralized controller unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station based on the station routing strategy, thereby realizing switching and traffic scheduling based on the granularity of the user satellite terminal.

[0029] In summary, the present invention uses network measurement to detect the landing path of user satellite terminals and, through centralized control, implements path replanning and traffic redirection for inter-station services by reconfiguring tunnel diversion strategies. This invention enables automatic switching of user satellite terminals between different ground stations, as well as dynamic replanning and traffic redirection of inter-station paths after the dynamic selection of service landing stations. It supports subnet mobility and automated switching control of end-to-end outbound paths, potentially improving the application and automation level of satellite communication networks.

[0030] Finally, it should be noted that the attribution-based satellite communication inter-site switching and traffic scheduling method disclosed in the embodiment of the present invention is only a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A satellite communication inter-site handover and traffic scheduling method based on attribution, characterized in that: The method comprises: S1, configures a home ground station for the user satellite terminal based on management, geography and resource-based home policies, and initializes the home route from the user satellite terminal to the home ground station; S2, pre-configures mutually reachable mesh tunnels between ground stations for transferring traffic between stations; S3: A network measurement mechanism is enabled between the user satellite terminal and its home ground station and other landing stations to monitor the path connectivity between the user satellite terminal and the ground station in real time. S4: If the network measurement detects that the path to the home ground station is connected, the service data of the user satellite terminal accessing the terrestrial network / Internet is routed to the home ground station through the home router and completed outbound. The service data of the terrestrial network / Internet accessing the user satellite terminal is forwarded to the user satellite terminal through the home station of the user satellite terminal. S5. If the network measurement detects that the path to the home ground station is disconnected or the path transmission quality is lower than a certain threshold, the centralized control unit switches the home route of the user satellite terminal to other landing stations, or the user satellite terminal actively switches the home route to other landing stations. At the same time, the centralized control unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station, and forwards the service data of the user satellite terminal that lands through other landing stations to the original home station through the inter-station tunnel for outbound network.

2. The attribution-based satellite communication inter-site handover and traffic scheduling method according to claim 1, characterized in that: The centralized control unit maintains the correspondence between all user satellite terminals and their home ground stations, as well as the service routing information of all user satellite terminals, and obtains the network measurement results between all user satellite terminals and the ground stations.

3. The attribution-based satellite communication inter-site handover and traffic scheduling method according to claim 1, characterized in that: The service data of the user satellite terminal that lands through other landing stations can be selected to be networked locally or returned to the original home station for network outage according to the network outage policy configured for the user satellite terminal by the current landing station.

4. The attribution-based satellite communication inter-site handover and traffic scheduling method according to claim 1, characterized in that: The centralized control unit maintains the service routing information of all user satellite terminals. When network measurement detects that the path to the home station is disconnected or the path transmission quality is lower than a certain threshold, different service flows are transferred to different landing stations according to the flow-based routing strategy to achieve service sharing between different ground stations. The centralized controller unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station based on the flow-based routing strategy to achieve switching and traffic scheduling based on the service flow granularity.

5. The attribution-based satellite communication inter-site handover and traffic scheduling method according to claim 1, characterized in that: The centralized control unit maintains the service routing information of all user satellite terminals. When network measurement detects that the path to the home ground station is disconnected or the path transmission quality is lower than a certain threshold, the services of different user satellite terminals are transferred to different landing stations according to the routing strategy based on the user satellite terminal, thereby realizing service sharing between different user satellite terminals among different ground stations. The centralized controller unit dynamically updates the tunnel diversion strategy between the landing station and the home ground station based on the station routing strategy, thereby realizing switching and traffic scheduling based on the granularity of the user satellite terminal.

Images