Natural disaster interrupts essential services due to the facility damage and lack of power supply. Especially, significant communication outages occurs in a wide area for hierarchical network such as cellular communication system in case core nodes are damaged or congested. In order to provide alternative communication ability, high throughput satellite (HTS) is one of the ideal candidates for disaster management because it provides operative communication for a wide area regardless of the availability of regular terrestrial infrastructures. However, conventional HTS relays data with predetermined beam bandwidth and connection, it is inefficient when the communication demand explodes in a disaster area. Therefore, this paper proposes novel frequency allocation technique with flexibility-enhanced HTS system for disaster management to respond to communication demand explosion. While related research works consider user-link resource allocation, this paper focuses on how to control feeder-link and user-link bandwidths in case that the both links can be assigned at continuous frequency such as Ka-band. Furthermore, our proposal addresses resilient satellite network by selecting optimum gateway based on the traffic demand at neighboring user-link beams. The effectiveness of our proposal is verified through simulation results.

中文翻译：

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用于灾难管理的灵活性增强型 HTS 系统：响应灾难中的通信需求爆炸

由于设施损坏和电力供应不足，自然灾害中断了基本服务。特别是，在核心节点损坏或拥塞的情况下，诸如蜂窝通信系统之类的分层网络会在大范围内发生重大通信中断。为了提供替代通信能力，高吞吐量卫星 (HTS) 是灾害管理的理想候选者之一，因为无论常规地面基础设施是否可用，它都能为广域提供有效通信。然而，传统的 HTS 以预定的波束带宽和连接来中继数据，当通信需求在灾区爆炸时效率低下。所以，本文提出了具有灵活性增强的 HTS 系统的新型频率分配技术，用于灾难管理，以应对通信需求爆炸。在相关研究工作考虑用户链路资源分配的同时，本文重点研究如何控制馈线链路和用户链路带宽，以防两条链路可以在连续频率（例如 Ka 频段）上分配。此外，我们的提议通过根据相邻用户链路波束的流量需求选择最佳网关来解决弹性卫星网络问题。通过仿真结果验证了我们建议的有效性。本文重点讨论如何控制馈线链路和用户链路带宽，以防两条链路都可以分配在连续频率（例如 Ka 波段）上。此外，我们的提议通过根据相邻用户链路波束的流量需求选择最佳网关来解决弹性卫星网络问题。通过仿真结果验证了我们建议的有效性。本文重点讨论如何控制馈线链路和用户链路带宽，以防两条链路都可以分配在连续频率（例如 Ka 波段）上。此外，我们的提议通过根据相邻用户链路波束的流量需求选择最佳网关来解决弹性卫星网络问题。通过仿真结果验证了我们建议的有效性。