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Terminal-Aware Multi-Connectivity Scheduler for Uplink Multi-Layer Non-Terrestrial Networks
Dazhi, Michael; Al-Hraishawi, Hayder; Mysore Rama Rao, Bhavani Shankar et al.
2023In IEEE Global Communications Conference (Globecom)
Peer reviewed
 

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Keywords :
Multi Connectivity; Satellite Communications; Energy Efficiency
Abstract :
[en] This paper introduces the concept of multi-connectivity (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.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Dazhi, Michael ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC
Al-Hraishawi, Hayder  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Mysore Rama Rao, Bhavani Shankar  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
External co-authors :
no
Language :
English
Title :
Terminal-Aware Multi-Connectivity Scheduler for Uplink Multi-Layer Non-Terrestrial Networks
Publication date :
12 January 2023
Event name :
IEEE Global Communications Conference 2022
Event organizer :
IEEE Communication Society
Event place :
Rio de Janeiro, Brazil
Event date :
04-12-2022 to 8-12-2022
Audience :
International
Main work title :
IEEE Global Communications Conference (Globecom)
Publisher :
IEEE
ISBN/EAN :
978-1-6654-5975-4
Pages :
1133-1139
Peer reviewed :
Peer reviewed
Focus Area :
Computational Sciences
FnR Project :
FNR14016225 - Integrated Satellite-terrestrial Systems For Ubiquitous Beyond 5g Communications, 2020 (01/10/2020-30/09/2026) - Symeon Chatzinotas
Name of the research project :
Industrial Partnership Block Grant (IPBG) ref 14016225
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 26 September 2022

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