业务自适应的卫星跳波束系统资源分配方法

Service-adaptive Resource Allocation Method for Satellite Beam-hopping Systems

多波束卫星通信系统在业务空间分布不均匀的情况下资源利用率较低,而跳波束技术虽然能够根据业务需求灵活分配波束资源,但在整个卫星覆盖区内全局跳变时计算复杂度较高。针对上述问题,提出了一种业务自适应的卫星跳波束系统资源分配方法,以系统吞吐量最大化为目标,采用先分簇跳变后全局跳变的方式为小区提供服务,从而降低计算复杂度,并充分适应卫星覆盖区内业务分布情况。该方法通过空间隔离的方式消除波束间的共信道干扰,可实现波束间全频率复用。仿真结果表明,该方法能够显著提高系统资源利用率和公平性。

The resource utilization rate of multi-beam satellite communication systems is relatively low when the demand space distribution is uneven, while the beam hopping technology can flexibly allocate beam resources according to traffic demand, but the computation is rather complex when global hopping is performed in the entire satellite coverage area. Focusing on this problem, this paper proposed a service-adaptive resource allocation method for beam hopping satellites. With the goal of maximizing the system throughput, the method adopted cluster hopping first and then global hopping to provide services for cells, lowering computation complexity and fully adapting to the demand distribution within the satellite coverage area. Furthermore, the inter-beam interference between beams is eliminated by space insulation, and full frequency reuse among beams can be realized. Simulation results show that this method significantly improves system resource utilization rate and fairness.