Flexibility-Enhanced HTS System for Disaster Management: Responding to Communication Demand Explosion in a Disaster

Tani, Shuntaro; Motoyoshi, Katsuyuki; Sano, Hiroyasu; Okamura, Atsushi; Nishiyama, Hiroki; Kato, Nei

doi:10.1109/tetc.2017.2688078

Cited by 17 publications

(6 citation statements)

References 18 publications

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“…Satellite communication is an infallible option for disaster management and emergency relief. High-throughput satellite is an alternate candidate as compared to terrestrial networks, which address resilient satellite networks by selecting an optimum gateway based on the traffic demand at neighboring user-link beams [30]. The authors proposed a frequency allocation scheme to improve the utilization of both user-link and feeder-link bandwidth by selecting optimal gateways.…”

Section: Literature Reviewmentioning

confidence: 99%

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Laghari

Shahwani

Shah

et al. 2021

Wireless Communications and Mobile Computing

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xCalamities such as earthquakes and tsunami affect communication services by devastating the communication network and electrical infrastructure. Multihop relay networks can be deployed to restore the communication environment quickly in catastrophe-stricken areas. However, performance in terms of throughput is affected by deploying the relay networks. In wireless local area networks (WLANs), the primary purpose of multiband transmission employing multihop relay networks is to increase the throughput and reduce the latency. In the future, wireless networks are believed to carry high throughput, more data rates, and less latency by expanding bandwidth-demanding applications. Simultaneous multiband transmission in WLAN systems is considered to increase the coverage area without power escalation. Due to the inherent characteristics of different bands and channel conditions, transmission rates tend to be different. The impact of such conditions may cater to the disproportional distribution of data among bands, causing some of the bands to be overwhelmed, which incurs buffer overflow and packet loss. In contrast, the channel capacity of some of the bands remains underutilized. In this paper, we consider the channel conditions and transmission rates of each band on either side of the relay to address the problems mentioned above. Furthermore, this paper proposes a load distribution-based end-to-end traffic scheduling technique to improve system performance. The simulation results demonstrate the effectiveness of our proposed method with maximizing throughput and minimizing end-to-end delay.

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Section: Literature Reviewmentioning

confidence: 99%

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Laghari

Shahwani

Shah

et al. 2021

Wireless Communications and Mobile Computing

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“…Limited throughput of HTS systems with underutilized spectrum Partial frequency reuse pattern [8][9][10][11][12] Full frequency reuse pattern with interference manag ement [13] [14]:…”

Section: Problems Reasons Solutions Referencesmentioning

confidence: 99%

“…For an orthogonal frequency division multiple-access-based satellite forward link, the authors in [9] combined the multicast resource allocation schemes and application-layer joint coding to enhance the performance of mobile satellite systems. In [10,11], although the authors proposed dynamic frequency allocation schemes to enhance the frequency flexibility, the conventional four-color frequency reuse (4FR) scheme was still employed to ensure interference isolation at the expense of lower spectrum utilization, which results in a capacity reduction problem. Moreover, the authors in [12] proposed a priority code scheme (PCS) to mitigate the unsuitable allocations of frequency resources in the HTS system, where the frequency-reuse pattern is assumed to be three to provide spatial separation among beams operating on the same frequency.…”

Section: Problems Reasons Solutions Referencesmentioning

confidence: 99%

Interference-Aware Radio Resource Management for Cognitive High-Throughput Satellite Systems

Zhang

Ruan

et al. 2019

Sensors

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By providing interactive broadband services to geographical areas underserved by terrestrial infrastructure, multi-beam satellite systems play a central role in future wireless communications. Targeting the terabit throughput requirements in satellite communications, we introduce a cognitive radio-based high-throughput satellite (HTS) system architecture where full frequency reuse is employed among beams. Moreover, by analyzing the characteristics of the considered architecture, we discuss the design challenges of radio resource management in cognitive HTS systems exposed to both intra-system and inter-system co-channel interference. Furthermore, to combat interference with low overhead, we propose a generic interference-aware resource management framework based on joint spatial division and multiplexing (JSDM). Under this framework, user grouping along with two-stage precoding is studied to achieve substantial improvement in the overall system throughput. Finally, some future research directions and challenges are also given.

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“…D EPLOYING multi-hop relay networks to extend the coverage area of the networks in scenarios such as catastrophe or military tactical communication, has received a lot of attention during the last decade [1]. In these cases, rehabilitation services are needed but communication infrastructure either is demolished or does not exist a priori.…”

Section: Introductionmentioning

confidence: 99%

Combine and Conquer: Simultaneous Transmission Over Multiband Multi-Hop WLAN Systems

Ali

2021

IEEE Access

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Multi-hop relay networks are deployed to restore communication environment in the catastrophe stricken area. Deployment of these networks are fast and easy but performance is low due to the relay nature of the networks. Given the surge of bandwidth hungry application, performance such as high data rates, high throughput and ultra-low latency is a concern in traditional one-hop Wireless Local Area Networks (WLANs) as well. Simultaneous transmission over multiple bands is a compendious solution that has the potential to significantly boost data rates and flexibility. It will enhance the network utilization and performance of high-bandwidth applications effectively and efficiently. However, there are certain challenges that need to be addressed before taking full advantage of simultaneous transmission over multiple bands. In this work, we outline the factors affecting the performance such as throughput and end-to-end delay in multiband multi-hop WLANs. Considering these factors, we design an end-to-end traffic scheduling technique that minimizes end-to-end delay and maximizes throughput. We design a mixed integer linear program (MILP) that optimizes end-to-end delay and maximizes throughput. Illustrative numerical results show that proposed technique effectively minimizes end-to-end delay and maximizes throughput.

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Flexibility-Enhanced HTS System for Disaster Management: Responding to Communication Demand Explosion in a Disaster

Cited by 17 publications

References 18 publications

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

Interference-Aware Radio Resource Management for Cognitive High-Throughput Satellite Systems

Combine and Conquer: Simultaneous Transmission Over Multiband Multi-Hop WLAN Systems

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