Uplink Capacity Optimization for High Throughput Satellites using SDN and Multi-Orbital Dual Connectivity

Dazhi, Michael N.; Al-Hraishawi, Hayder; Shankar, M. R. Bhavani; Chatzinotas, Symeon

doi:10.1109/iccworkshops53468.2022.9814707

Cited by 6 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, in the context of NTN networks to extend the coverage of uplink transmissions performed by users towards NGSO satellites, the supplementary uplink technique [168] can be utilized here to enhance user experience. Supplementary uplink and dual connectivity can also be used for reducing latency or providing higher uplink data rates in power-limited situations [169].…”

Section: Coordinated Accessmentioning

confidence: 99%

A Survey on Nongeostationary Satellite Systems: The Communication Perspective

Al-Hraishawi

Chougrani

Kisseleff

et al. 2023

IEEE Commun. Surv. Tutorials

Self Cite

View full text Add to dashboard Cite

The next phase of satellite technology is being characterized by a new evolution in non-geostationary orbit (NGSO) satellites, which conveys exciting new communication capabilities to provide non-terrestrial connectivity solutions and to support a wide range of digital technologies from various industries. NGSO communication systems are known for a number of key features such as lower propagation delay, smaller size, and lower signal losses in comparison to the conventional geostationary orbit (GSO) satellites, which can potentially enable latency-critical applications to be provided through satellites. NGSO promises a substantial boost in communication speed and energy efficiency, and thus, tackling the main inhibiting factors of commercializing GSO satellites for broader utilization. The promised improvements of NGSO systems have motivated this paper to provide a comprehensive survey of the state-of-theart NGSO research focusing on the communication prospects, including physical layer and radio access technologies along with the networking aspects and the overall system features and architectures. Beyond this, there are still many NGSO deployment challenges to be addressed to ensure seamless integration not only with GSO systems but also with terrestrial networks. These unprecedented challenges are also discussed in this paper, including coexistence with GSO systems in terms of spectrum access and regulatory issues, satellite constellation and architecture designs, resource management problems, and user equipment requirements. Finally, we outline a set of innovative research directions and new opportunities for future NGSO research.

show abstract

Section: Coordinated Accessmentioning

confidence: 99%

A Survey on Nongeostationary Satellite Systems: The Communication Perspective

Al-Hraishawi

Chougrani

Kisseleff

et al. 2023

IEEE Commun. Surv. Tutorials

Self Cite

View full text Add to dashboard Cite

show abstract

“…1) The design guidelines are outlined for the deployment of a multi-layer satellite network comprising of GEO, MEO and LEO satellites, which are all served by a multi-orbital hybrid gateway station (HGS) [5]. This gateway station functions with a softwarized controller at the network layer, which performs functions including the classification and dispatching of PDUs onto different queues based on the terminal type of the transmitting user.…”

Section: Contributionsmentioning

confidence: 99%

“…It then classifies the PDUs as IoT or VSAT, and then dispatch them in different queues based on their transmitting terminal IDs. At the R/S, the RR scheduler functions by allocating three different PDUs of the IoT and VSAT terminals successively, on the RB of each of the CCs of the three orbital satellites using the RR mechanism in [5].…”

Section: B Round Robin Allocation Schedulermentioning

confidence: 99%

“…In this direction, an intriguing concept has been recently studied within the multi-beam satellite architectures, that is dual connectivity (DC), which allows users to be simultaneously served with different systems and/or frequency bands [5]. Before that, the DC feature has been considered by the 3rd Generation Partnership Project (3GPP) in Release 12 for adoption to the fifth-generation (5G) New Radio (NR) specifications owing to its capability of maximizing the spectrum utilization and avoiding the traffic overload [6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Terminal-Aware Multi-Connectivity Scheduler for Uplink Multi-Layer Non-Terrestrial Networks

Dazhi

Al-Hraishawi

Shankar

et al. 2022

2022 IEEE Globecom Workshops (GC Wkshps)

Self Cite

View full text Add to dashboard Cite

This paper introduces the concept of multiconnectivity (MC) to the multi-orbit non-terrestrial networks (NTNs), where user terminals can be served by more than one satellite to achieve higher peak throughput. MC is a technique initially introduced by the 3rd Generation Partnership Project (3GPP) for terrestrial communications in 4G and 5G, it has shown much gain in the terrestrial domain and this paper explores areas where this concept can benefit the satellite domain. MC can increase throughput, but this entails increased power consumption at user terminal for uplink transmissions. The energy efficiency of uplink communications can be improved by designing efficient scheduling schemes, and to this end, we developed a terminal aware multi-connectivity scheduling algorithm. This proposed algorithm uses the available radio resources and propagation information to intelligently define a dynamic resource allocation pattern, that optimally routes traffic so as to maximize uplink data rate while minimizing the energy consumption at the UT. The algorithm operates with the terminal differentiating multi-layer NTN resource scheduling architecture, which has a softwarized dispatcher at the network layer that classifies and differentiates the packets based on terminal type. The performance of the proposed algorithm was compared with round robin and joint carrier schedulers in terms of uplink data rate and energy efficiency. We also provide architectural design of implementable schedulers for multi-orbital satellite networks that can operate with different classes of terminals.

show abstract

“…In [11], optimal dynamic capacity allocation schemes have been proposed in a multi-beam smart gateway diversity HTS system with non-regenerative satellites in order to minimize system's capacity losses as well as to satisfy various quality-of-service (QoS) requirements of the served users. Furthermore, resource management algorithms have been developed in [12] and [13] to efficiently distribute the inter-orbit satellite resources in the non-terrestrial networks (NTNs) with taking into consideration uplink data rate and communication latency.…”

Section: Introductionmentioning

confidence: 99%

Joint Beam Hopping and Carrier Aggregation in High Throughput Multibeam Satellite Systems

et al. 2022

View full text Add to dashboard Cite

Beam hopping (BH) and carrier aggregation (CA) are two promising technologies for the next generation satellite communication systems to achieve several orders of magnitude increase in system capacity and to significantly improve the spectral efficiency. While BH allows a great flexibility in adapting the offered capacity to the heterogeneous demand, CA further enhances the user quality-ofservice (QoS) by allowing it to pool resources from multiple adjacent beams. In this paper, we consider a multi-beam high throughput satellite (HTS) system that employs BH in conjunction with CA to capitalize on the mutual interplay between both techniques. Particularly, an innovative joint BH-CA scheme is proposed and analyzed in this work to utilize their individual competencies. This includes designing an efficient joint time-space beam illumination pattern for BH and multi-user aggregation strategy for CA. Through this, user-carrier assignment, transponder filling-rates, beams hopping pattern, and illumination duration are all simultaneously optimized by formulating a joint optimization problem as a multi-objective mixed integer linear programming problem (MINLP). Simulation results are provided to corroborate our analysis, demonstrate the design tradeoffs, and point out the potentials of the proposed joint BH-CA concept. Advantages of our BH-CA scheme versus the conventional BH method without employing CA are investigated and presented under the same system circumstances.

show abstract

Uplink Capacity Optimization for High Throughput Satellites using SDN and Multi-Orbital Dual Connectivity

Cited by 6 publications

References 11 publications

A Survey on Nongeostationary Satellite Systems: The Communication Perspective

A Survey on Nongeostationary Satellite Systems: The Communication Perspective

Terminal-Aware Multi-Connectivity Scheduler for Uplink Multi-Layer Non-Terrestrial Networks

Joint Beam Hopping and Carrier Aggregation in High Throughput Multibeam Satellite Systems

Contact Info

Product

Resources

About