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This study addresses mobility challenges in massive Low Earth Orbit (LEO) satellite networks by integrating Information Centric Networking (ICN). The proposed solution minimizes traffic loss during satellite handovers, enhancing global internet connectivity.

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Area of Science:

  • Satellite Communications
  • Information Centric Networking
  • Network Mobility Management

Background:

  • Massive Low Earth Orbit (LEO) constellations are increasingly deployed for global internet access, functioning as in-orbit core routers.
  • LEO satellite networks face significant mobility challenges due to high satellite velocities and frequent ground gateway handovers.
  • Information Centric Networking (ICN) offers potential benefits for LEO networks, particularly in managing receiver mobility, but sender mobility remains an issue.

Purpose of the Study:

  • To propose a comprehensive solution for sender mobility in massive LEO constellations using the Named-Data Networking (NDN) architecture.
  • To develop a scalable method for content-to-ground gateway association and traffic addressing without network routing algorithm cooperation.
  • To ensure the proposed solution is easily testable and deployable by not requiring modifications to the NDN protocol.

Main Methods:

  • Leveraging the Named-Data Networking (NDN) architecture, a mature Information Centric Networking (ICN) proposal.
  • Implementing a scalable content-to-ground gateway mapping mechanism.
  • Developing a novel traffic addressing scheme for LEO gateways independent of network routing protocols.

Main Results:

  • The proposed solution effectively manages sender mobility in massive LEO constellations.
  • Traffic losses are found to be negligible for acceptable handover lengths, even with limited satellite visibility.
  • The approach avoids modifications to the core NDN protocol, facilitating practical implementation.

Conclusions:

  • The integration of NDN provides a robust solution to sender mobility challenges in LEO satellite networks.
  • The developed methods enable efficient content delivery and addressing in dynamic LEO environments.
  • The findings support the viability of using ICN architectures for future global internet backbones based on LEO constellations.