Radio resource management for non-geostationary orbit

Abstract

In this chapter, we introduce a potential game-based approach to implement collaborative user scheduling and power allocation in the uplink multi-beam non-geostationary orbit (NGSO) system. First of all, a framework of the multi-beam uplink NGSO system is proposed, where full frequency reuse and co-channel interference among different spot beams are considered. To provide broadband NGSO service effectively, we formulate an initial optimization problem of maximizing uplink sum transmission capacity and then transform it into an interference mitigation problem to address the mathematical intractability. Specifically, a game-theoretic model is implemented to solve the transformed optimization problem, which is proved to be a potential game and existence of Nash equilibriums (NEs). Moreover, an iterative algorithm with low computational complexity, motivated by the finite improvement property, is designed to implement collaborative user scheduling and power allocation to the NE point. Finally, the simulation results prove the convergence and effectiveness of the proposed potential game-based approach.