Distributed Satellite Addressing and Routing for Topology Stability
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Solution Overview
Problem
Existing satellite addressing and routing methods face challenges such as insufficient utilization of satellite communication relationships, lack of global vision, and additional delay in calculating forwarding directions, which can lead to disconnection in satellite communication networks due to rapid topology changes and limited resources.
Innovation Solution
A distributed addressing and fast routing method is proposed, where each satellite independently configures its address and generates multiple routes during networking, using a distributed address allocation mechanism that reduces resource occupation and ensures uninterrupted communication by synchronizing address allocation with routing table establishment, employing orbit numbering, mirroring satellite orbits, and establishing a relative motion model to determine optimal controller deployment and routing paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a terrestrial communication network addressing and routing method is directly applied to satellite network, then the method is simple to implement, but it cannot adapt to rapid topology changes and leads to communication disconnection
Solution Approach 1:
The patent applies dynamics by making the addressing and routing method adaptive to changing satellite topologies. The controller dynamically updates routing tables based on real-time satellite positions and topology changes, allowing the system to transition from static terrestrial networking approaches to dynamic satellite-specific routing that maintains communication stability despite rapid topology changes.
Solution Approach 2:
The patent changes key parameters including introducing satellite-specific addressing schemes, adjusting routing update intervals based on topology change rates, and modifying forwarding decisions based on real-time satellite ephemeris data. These parameter changes enable the system to adapt to the unique characteristics of satellite networks while maintaining implementation feasibility.
2Device complexity
If centralized address allocation is used in satellite network, then address management is simplified, but it increases resource occupation and reduces allocation speed
Solution Approach 1:
The patent segments the centralized address allocation function into distributed components. Each satellite independently performs address allocation and routing table generation based on local topology information received from the controller. This segmentation reduces the resource burden on any single node and enables parallel address allocation across multiple satellites, significantly improving allocation speed while maintaining manageable complexity through standardized protocols.
Solution Approach 2:
The patent implements self-service by enabling each satellite to autonomously generate its own address and routing table based on broadcast topology information from the controller. Satellites independently process received data, perform local calculations, and update their routing tables without requiring continuous centralized control, thereby reducing resource occupation while maintaining efficient address management.
3Measurement precision
If routing calculation is performed after packet reception, then forwarding decisions can be made with complete information, but calculation delay causes communication disconnection during rapid topology changes
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing routing tables in each satellite before actual data transmission occurs. The controller periodically broadcasts updated routing information based on predicted satellite topologies, allowing satellites to have forwarding decisions ready in advance. This eliminates real-time calculation delays during packet forwarding while maintaining accuracy through periodic updates based on ephemeris data and topology predictions.
Solution Approach 2:
The patent rushes through the routing decision process by using pre-computed routing tables that enable direct lookup and forwarding without real-time calculation. When packets arrive, satellites skip the time-consuming calculation phase and directly use stored routing information for immediate forwarding, thereby reducing latency and preventing communication disconnection during rapid topology changes.
4Productivity
If satellite network resources are fully allocated to control functions, then addressing and routing performance improves, but resources available for terrestrial communication support decrease
Solution Approach 1:
The patent applies partial action by implementing addressing and routing functions only when and where needed in the satellite network. Rather than continuously consuming resources for control operations, the system performs address allocation and routing table updates at appropriate intervals based on topology change rates, using minimal resources while maintaining efficient performance. This allows sufficient resources to remain available for terrestrial communication support.
Data Source
AI summary
Provided is a distributed addressing and fast routing method and a system thereof, which belongs to the technical field of satellite communication. First, a satellite relative motion model is established, thereafter, an appropriate reference frame satellite is selected to deploy a controller based on the established satellite relative motion model, subsequently, satellite addresses have been allocated based on the deployed controller, and finally a routing table is synchronously established based on the allocated satellite addresses. A brand-new packet communication protocol of the present disclosure is more flexible in setting the structure of each field. Positioning the controller satellite with betweenness centrality ensures the short-distance communication between the controller and the satellites. The distributed addressing method reduces the frequent communication between satellites and improves the address allocation speed.