A path planning method and space-ground integrated network system
A path planning and path technology, applied in the field of communication network, can solve the problems of increasing the risk of service request packet loss, large path delay, etc., to reduce the risk of service request message loss, reduce path delay, and timely And the effect of sending accurately
Active Publication Date: 2020-06-19
CHINA UNITED NETWORK COMM GRP CO LTD +1
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[0004] This application provides a path planning method and a space-ground integrated network system, which are used to solve the problem of large path delay due to too long path and increased risk of service request message loss
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0028] An embodiment of the present invention provides a path planning method, which is applied to a space-ground integrated network system 00, in the space-ground integrated network system 00, such as figure 2 As shown, it includes at least a space-based system 01, a ground-based system 02, and a synergy 03, wherein the space-based system 01 includes at least a space-based SDN controller 011 and LEO012, and the ground-based system includes at least a ground-based SDN controller 021 and a ground station 022. Space-based SDN controller 011 is used to control the communication between LEO and other LEOs or ground stations; LEO includes at least communication satellites, relay satellites, navigation satellites and other application satellites for reconnaissance, surveying and map...
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The present application discloses a path planning method and a space-ground integrated network system, which relate to the communication field and solve the problems of large time delay and increased risk of service request message loss due to too long paths. The method includes: the ground-based SDN controller instructs the sending ground station to broadcast the first detection message, and obtains the first feedback message received by each ground station in the ground-based system where the sending ground station is located; the ground-based SDN controller according to the first feedback message, Determine the topological path between the sending ground station and the receiving ground station, and the path delay of each topological path; the ground-based SDN controller determines the topological path corresponding to the minimum path delay in the path delay as the intermediate topological path; if the intermediate topology If the path delay of the path is less than the time threshold, the ground-based SDN controller determines the intermediate topology path as the specified topology path for forwarding the service request message. This application is suitable for planning the message sending path in the space-ground integrated network system.
Description
technical field [0001] The invention relates to the technical field of communication networks, in particular to a path planning method and a space-ground integrated network system. Background technique [0002] The space-ground integrated network system is formed by the joint networking of space-based systems and ground-based systems, such as figure 1 As shown, the space-based system is mainly based on low-orbit satellites (Low Earth Orbit, LEO), and the ground-based system is mainly based on ground stations. Due to the limitation of the distance between LEO and LEO, and the distance between LEO and ground station, LEO can usually only communicate with another LEO whose signal is reachable, and can only communicate with the ground station within its own communication range. Due to the long distance between LEOs and the limited size and slow rate of service request messages transmitted between LEOs, when the sending LEO sends service request messages to the receiving LEO, us...
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IPC IPC(8): H04L12/727H04B7/185H04L45/121
Inventor 张帅曹畅唐雄燕赫罡马季春陈颖霞
Owner CHINA UNITED NETWORK COMM GRP CO LTD