Technology Category
Application Domains: Mobility, Driving & FlightPlanning, Routing, and Scheduling: Replanning and Plan RepairMultiagent Systems: Mechanism Design
A Scalable Solution for Node Mobility Problems in NDN-Based Massive LEO Constellations
🤖 AI Summary
This work addresses the challenge of supporting producer mobility in large-scale low Earth orbit (LEO) satellite constellations based on Named Data Networking (NDN), where high-speed movement causes frequent handovers between ground gateways—a scenario poorly handled by existing mechanisms. The authors propose a scalable mobility solution that requires no modification to the NDN protocol and operates without inter-router coordination. By introducing a content-to-gateway mapping mechanism combined with a stateless forwarding strategy, the approach binds content to specific ground gateways and enables routing-agnostic addressing. This is the first scheme to natively support producer mobility within the original NDN architecture, significantly enhancing deployability and scalability. Experimental results demonstrate that, under reasonable handover intervals, data loss remains negligible even when each satellite maintains connectivity to only a single ground station, confirming the effectiveness and robustness of the proposed method.
Technology Category
Application Category
📝 Abstract
In recent years, there has been increasing investment in the deployment of massive commercial Low Earth Orbit (LEO) constellations to provide global Internet connectivity. These constellations, now equipped with inter-satellite links, can serve as low-latency Internet backbones, requiring LEO satellites to act not only as access nodes for ground stations, but also as in-orbit core routers. Due to their high velocity and the resulting frequent handovers of ground gateways, LEO networks highly stress mobility procedures at both the sender and receiver endpoints. On the other hand, a growing trend in networking is the use of technologies based on the Information Centric Networking (ICN) paradigm for servicing IoT networks and sensor networks in general, as its addressing, storage, and security mechanisms are usually a good match for IoT needs. Furthermore, ICN networks possess additional characteristics that are beneficial for the massive LEO scenario. For instance, the mobility of the receiver is helped by the inherent data-forwarding procedures in their architectures. However, the mobility of the senders remains an open problem. This paper proposes a comprehensive solution to the mobility problem for massive LEO constellations using the Named-Data Networking (NDN) architecture, as it is probably the most mature ICN proposal. Our solution includes a scalable method to relate content to ground gateways and a way to address traffic to the gateway that does not require cooperation from the network routing algorithm. Moreover, our solution works without requiring modifications to the actual NDN protocol itself, so it is easy to test and deploy. Our results indicate that, for long enough handover lengths, traffic losses are negligible even for ground stations with just one satellite in sight.
Problem
Research questions and friction points this paper is trying to address.
Node Mobility
NDN
LEO Constellations
Information Centric Networking
Handover
Innovation
Methods, ideas, or system contributions that make the work stand out.
Named-Data Networking
LEO constellations
node mobility
scalable routing
Information Centric Networking
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