Due to the time-varying and non-uniform terrestrial traffic requirements, efficiently utilizing limited satellite resources to match non-uniform traffic demands brings challenges for Low Earth Orbit (LEO) beam-hopping (BH) technology. Existing LEO BH systems typically assume the fixed beam coverage sizes, potentially leading to resource congestion or wastage. In this letter, we present a novel multi-satellite collaborative two-dimensional load-balancing beam-hopping scheme based on dynamic beam coverage (MSDBC-BH), which encompasses both inter-beam load balancing and inter-satellite load balancing. This letter proposes the dynamic beam coverage design to achieve effective inter-beam load balancing. Additionally, a cell-satellite assignment scheme based on a game-matching algorithm is introduced to satisfy inter-satellite load balancing. Simulation results illustrate that the proposed MSDBC-BH effectively addresses the load imbalance among satellites and improves system throughput.

中文翻译：

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基于动态波束覆盖的低轨电轨道跳波系统多星协同负载均衡方案


由于时变和非均匀的地面业务要求，有效利用有限的卫星资源来满足非均匀的通信需求，给近地轨道 （LEO） 跳波束 （BH） 技术带来了挑战。现有的 LEO BH 系统通常采用固定的波束覆盖尺寸，这可能导致资源拥塞或浪费。在本文中，我们提出了一种基于动态波束覆盖的新型多星协同二维负载均衡跳波束方案 （MSDBC-BH），该方案包括波束间负载均衡和星间负载均衡。本信提出了动态波束覆盖设计，以实现有效的波束间负载均衡。此外，该文还提出了一种基于博弈匹配算法的小区-卫星分配方案，以满足星间负载均衡的要求。仿真结果表明，所提出的 MSDBC-BH 有效地解决了卫星之间的负载不平衡问题，提高了系统吞吐量。