Beam Hopping - a Flexible Satellite Communication System for Mobility

Panthi, Sunil; Breynaert, Dirk; McLain, Christopher; King, Janet

doi:10.2514/6.2017-5413

Cited by 16 publications

(4 citation statements)

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“…1, where the telemetry, tracking, and command (TT&C) station is part of the satellite operation center whereas the gateway and the resource manager are part of the network operation center [2]. The TT&C station is responsible for the synchronization among beams during the BH process [24]. The bent-pipe transparent satellite payload is assumed to be equipped with switching matrix and digital transparent processors to enable beam activation/deactivation Fig.…”

Section: System Modelmentioning

confidence: 99%

Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems

Wang

Lei

Lagunas

et al. 2022

IEEE Trans. Wireless Commun.

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Next-generation satellite systems require more flexibility in resource management such that available radio resources can be dynamically allocated to meet time-varying and nonuniform traffic demands. Considering potential benefits of beam hopping (BH) and non-orthogonal multiple access (NOMA), we exploit the time-domain flexibility in multi-beam satellite systems by optimizing BH design, and enhance the powerdomain flexibility via NOMA. In this paper, we investigate the synergy and mutual influence of beam hopping and NOMA. We jointly optimize power allocation, beam scheduling, and terminaltimeslot assignment to minimize the gap between requested traffic demand and offered capacity. In the solution development, we formally prove the NP-hardness of the optimization problem. Next, we develop a bounding scheme to tightly gauge the global optimum and propose a suboptimal algorithm to enable efficient resource assignment. Numerical results demonstrate the benefits of combining NOMA and BH, and validate the superiority of the proposed BH-NOMA schemes over benchmarks.

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Section: System Modelmentioning

confidence: 99%

Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems

Wang

Lei

Lagunas

et al. 2022

IEEE Trans. Wireless Commun.

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show abstract

“…The decisions are communicated to the satellite payload via the TT&C station and to the gateway [3], [16]. The TT&C station is responsible for the synchronization among beams during the BH process [24]. Following the resource-allocation decisions, the gateway delivers data from the core networks to the satellite payload.…”

Section: System Modelmentioning

confidence: 99%

Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems

Wang¹,

Lei²,

Lagunas³

et al. 2021

Preprint

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Next-generation satellite systems require more flexibility in resource management such that available radio resources can be dynamically allocated to meet time-varying and non-uniform traffic demands.Considering potential benefits of beam hopping (BH) and non-orthogonal multiple access (NOMA), we exploit the time-domain flexibility in multi-beam satellite systems by optimizing BH design, and enhance the power-domain flexibility via NOMA. In this paper, we investigate the synergy and mutual influence of beam hopping and NOMA. We jointly optimize power allocation, beam scheduling, and terminal-timeslot assignment to minimize the gap between requested traffic demand and offered capacity.In the solution development, we formally prove the NP-hardness of the optimization problem. Next, we develop a bounding scheme to tightly gauge the global optimum and propose a suboptimal algorithm to enable efficient resource assignment. Numerical results demonstrate the benefits of combining NOMA and BH, and validate the superiority of the proposed BH-NOMA schemes over benchmarks.

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“…As stated above, the beam hopping time plan (BHTP) [33], which is also named as the beam hopping illumination pattern [2], determines dwell time and illumination order of each beam. Obviously, it is the most important system configuration since beam hopping technique is mainly based on time slicing.…”

Section: Beam Hopping Time Planmentioning

confidence: 99%

Dynamic Beam Hopping Time Slots Allocation Based on Genetic Algorithm of Satellite Communication under Time-Varying Rain Attenuation

et al. 2021

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Beam hopping technology is considered to provide a high level of flexible resource allocation to manage uneven traffic requests in multi-beam high throughput satellite systems. Conventional beam hopping resource allocation methods assume constant rainfall attenuation. Different from conventional methods, by employing genetic algorithm this paper studies dynamic beam hopping time slots allocation under the effect of time-varying rain attenuation. Firstly, a beam hopping system model as well as rain attenuation time series based on Dirac lognormal distribution are provided. On this basis, the dynamic allocation method by employing genetic algorithm is proposed to obtain both quantity and arrangement of time slots allocated for each beam. Simulation results show that, compared with conventional methods, the proposed algorithm can dynamically adjust time slots allocation to meet the non-uniform traffic requirements of each beam under the effect of time-varying rain attenuation and effectively improve system performance.

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Beam Hopping - a Flexible Satellite Communication System for Mobility

Cited by 16 publications

References 0 publications

Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems

Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems

Joint Optimization of Beam-Hopping Design and NOMA-Assisted Transmission for Flexible Satellite Systems

Dynamic Beam Hopping Time Slots Allocation Based on Genetic Algorithm of Satellite Communication under Time-Varying Rain Attenuation

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