Flexibility-Enhanced HTS System for Disaster Management: Responding to Communication Demand Explosion in a Disaster
| Autor: | Katsuyuki Motoyoshi, Shigenori Tani, Atsushi Okamura, Nei Kato, Hiroki Nishiyama, Hiroyasu Sano |
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| Rok vydání: | 2020 |
| Předmět: |
Flexibility (engineering)
020301 aerospace & aeronautics Emergency management business.industry Computer science Bandwidth (signal processing) 020206 networking & telecommunications 02 engineering and technology Computer Science Applications Frequency allocation Human-Computer Interaction Disaster area 0203 mechanical engineering High-throughput satellite Default gateway 0202 electrical engineering electronic engineering information engineering Computer Science (miscellaneous) Resource allocation business Information Systems Computer network |
| Zdroj: | IEEE Transactions on Emerging Topics in Computing. 8:159-167 |
| ISSN: | 2376-4562 |
| DOI: | 10.1109/tetc.2017.2688078 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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