Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

Journal of Beijing University of Posts and Telecommunications ›› 2024, Vol. 47 ›› Issue (6): 105-110.

Previous Articles    

QoS Balancing and Interference Suppression for LEO Beam-hopping Satellite Networks

  

  • Received:2024-03-30 Revised:2024-06-11 Online:2024-12-28 Published:2024-10-29

Abstract: To address the problems of quality of service imbalance and inter-satellite interference, a low earth orbit beam-hopping satellite network is proposed, it can enhance the quality of service through inter-satellite quality of service balancing and interference suppression. Cells with different types of services have varying priority levels, and each cell should be allocated at least one-time slot in a beam-hopping time window. Therefore, a cell quality equalization algorithm to cluster inter-satellite cells is proposed. Since multiple satellites share the spectrum, severe inter-satellite interference diminishes cells' quality of service. Therefore, a dynamic interference suppression algorithm is introduced. Simulation results show that compared to the maximum elevation angle algorithm, the cell quality equalization algorithm reduces the inter-satellite quality of service disparity by 70% and achieves quality of service balancing. Compared to scenarios without interference suppression, the dynamic interference suppression algorithm ensures that the inter-satellite interference is always below the interference threshold, therefore improving the quality of service levels.

Key words: beam hopping technology, interference suppression, quality of service balancing

CLC Number: