Beamforming Design and Satellite Selection for Realizing the Integrated Communication and Navigation in LEO Satellite Networks

Relying on the powerful communication capabilities and rapidly changing geometric configurations, Low Earth Orbit (LEO) satellites have become strong candidates for offering the integrated communication and navigation (ICAN) services in future sixth generation (6G) networks. Considering the distinct performance and resource requirements, how to strike a balance between communication and navigation is one of the key design issues in LEO-ICAN systems. Against this backdrop, we take the transmission rate and geometric dilution of precision (GDOP) as evaluation metrics of communication and navigation performance, respectively, and formulate a weighted rate and GDOP maximization problem by jointly optimizing the beamforming design and satellite selection. To deal with the optimization problem, we split the original problem into the beamforming design and satellite selection subproblems, and propose a two-layer resource allocation algorithm to solve these subproblems iteratively until convergence. Specifically, in the inner layer, the beamforming design is modeled as a difference-of-convex (DC) problem, and the DC programming method is applied to maximize the communication rate. In the outer layer, the satellite selection is modeled as an overlapping coalition formation (OCF) game, and the OCF-based satellite selection algorithm is proposed to simultaneously reconcile the navigation GDOP. Extensive simulation results demonstrate the effectiveness of our proposed algorithms and reveal the trade-off between communication and navigation performance.

• Publication year

  2026

• Venue

  IEEE Transactions on Wireless Communications

• Publication date

  Unknown publication date

• Fields of study

  Computer Science, Engineering

• Identifiers
  DOI 10.1109/TWC.2025.3646811
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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