A method for fast perception of satellite constellation network topology status

By combining the BFD and OSPF routing protocols in a satellite constellation network, rapid fault detection and route convergence across layers are achieved, solving the problem of slow link fault detection and route convergence speed in satellite constellation networks and improving network reliability and stability.

CN120811460BActive Publication Date: 2026-05-26BEIJING RES INST OF TELEMETRY
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Patent Information

Application Number
CN202511021956.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-24
Publication Date
2026-05-26
Estimated Expiration
2045-07-24

AI Technical Summary

Technical Problem

Traditional OSPF protocols are slow in detecting link failures and converging routes in satellite constellation networks. Existing inter-satellite link failure detection schemes are not perfect in multi-level collaborative perception of network status anomalies and network health management, and cannot meet the high reliability and fast response requirements of satellite constellation networks.

Method used

By combining the BFD and OSPF routing protocols, and deploying multi-dimensional physical layer monitoring modules and the BFD protocol on satellite nodes, the inter-satellite link status is monitored in real time. By utilizing physical layer signal status monitoring technology and the fast link status detection capability of the BFD protocol, cross-layer closed-loop linkage is achieved, faults are quickly detected and route recalculation is triggered, reducing resource consumption and improving network performance.

Benefits of technology

It enables rapid fault detection and recovery in satellite constellation networks, shortens routing convergence time, improves network resource utilization efficiency and overall transmission efficiency, and ensures high network reliability and stability.

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Abstract

This invention provides a method for rapid perception of the topology status of a satellite constellation network. It deploys a multi-dimensional physical layer monitoring module, a dynamic adaptive BFD detection mechanism, the OSPF routing protocol, and a shared data exchange area between the BFD driver and the OSPF process on each satellite node. This invention utilizes physical layer signal status monitoring technology and the rapid link status detection capability of the BFD protocol to monitor the connectivity of inter-satellite links in real time. Upon detecting a fault, it immediately notifies relevant nodes via control messages. Simultaneously, it links the BFD detection results with the OSPF routing protocol, triggering immediate route recalculation, thereby shortening route convergence time. This invention constructs a cross-layer closed-loop linkage system, dynamically adjusting protocol layer detection parameters through physical layer perception data, and combining hardware acceleration to optimize the entire fault detection process. This not only accelerates fault detection and recovery but also improves the resource utilization efficiency and overall transmission efficiency of the inter-satellite network, ensuring high network reliability and stability.
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