[en] Interest in the integration of Terrestrial Networks (TN) and Non-Terrestrial Networks (NTN); primarily satellites; has been rekindled due to the potential of NTN to provide ubiquitous coverage. Especially with the peculiar and flexible physical layer properties of 5G-NR, now direct access to 5G services through satellites could become possible. However, the large Round-Trip Delays (RTD) in NTNs require a re-evaluation of the design of RLC and PDCP layers timers (and associated buffers), in particular for the regenerative payload satellites which have limited computational resources, and hence need to be optimally utilized. Our aim in this work is to initiate a new line of research for emerging NTNs with limited resources from a higher-layer perspective. To this end, we propose a novel and efficient method for optimally designing the RLC and PDCP layers' buffers and timers without the need for intensive computations. This approach is relevant for low-cost satellites, which have limited computational and energy resources. The simulation results show that the proposed methods can significantly improve the performance in terms of resource utilization and delays.
Disciplines :
Electrical & electronics engineering
Author, co-author :
SHEEMAR, Chandan Kumar ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
KUMAR, Sumit ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
QUEROL, Jorge ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
External co-authors :
no
Language :
English
Title :
Adaptive Timers and Buffer Optimization for Layer-2 Protocols in 5G Non-Terrestrial Networks
Publication date :
21 September 2023
Event name :
2023 International Conference on Software, Telecommunications and Computer Networks (SoftCOM)
Event place :
Split, Hrv
Event date :
21-09-2023 => 23-09-2023
Main work title :
2023 31st International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2023
Editor :
Begusic, Dinko
Publisher :
Institute of Electrical and Electronics Engineers Inc.
O. Kodheli, A. Guidotti, and A. Vanelli-Coralli, "Integration of satellites in 5g through leo constellations, " in GLOBECOM 2017-2017 IEEE Global Communications Conference. IEEE, 2017, pp. 1-6.
O. Kodheli, E. Lagunas, N. Maturo, S. K. Sharma, B. Shankar, J. F. M. Montoya, J. C. M. Duncan, D. Spano, S. Chatzinotas, S. Kisseleff et al., "Satellite communications in the new space era: A survey and future challenges, " IEEE Communications Surveys & Tutorials, vol. 23, no. 1, pp. 70-109, 2020.
M. Giordani and M. Zorzi, "Satellite communication at millimeter waves: A key enabler of the 6g era, " in 2020 International Conference on Computing, Networking and Communications (ICNC). IEEE, 2020, pp. 383-388.
C. K. Sheemar, L. Badia, and S. Tomasin, "Game-Theoretic mode scheduling for dynamic tdd in 5g systems, " IEEE Communications Letters, vol. 25, no. 7, pp. 2425-2429, 2021.
C. K. Sheemar, C. K. Thomas, and D. Slock, "Practical hybrid beamforming for millimeter wave massive MIMO full duplex with limited dynamic range, " IEEE Open Journal of the Communications Society, vol. 3, pp. 127-143, 2022.
C. K. Sheemar and D. Slock, "Beamforming for bidirectional MIMO full duplex under the joint sum power and per antenna power constraints, " in ICASSP 2021-2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2021, pp. 4800-4804.
C. K. Sheemar, G. C. Alexandropoulos, D. Slock, J. Querol, and S. Chatzinotas, "Full-duplex-enabled joint communications and sensing with reconfigurable intelligent surfaces, " arXiv preprint arXiv:2306.10865, 2023.
C. K. Sheemar, S. Tomasin, D. Slock, and S. Chatzinotas, "Near-field intelligent reflecting surfaces for millimeter wave MIMO full duplex, " arXiv preprint arXiv:2211.10700, 2022.
M. Hoyhtya, S. Boumard, A. Yastrebova, P. Jarvensivu, M. Kiviranta, and A. Anttonen, "Sustainable satellite communications in the 6g era: A european view for multi-layer systems and space safety, " IEEE Access, 2022.
C. K. Sheemar and D. Slock, "Massive MIMO mmwave full duplex relay for iab with limited dynamic range, " in 2021 11th IFIP International Conference on New Technologies, Mobility and Security (NTMS). IEEE, 2021, pp. 1-5.
C. K. Thomas, C. K. Sheemar, and D. Slock, "Multi-stage/hybrid bf under limited dynamic range for ofdm fd backhaul with mimo si nulling, " in 2019 16th International Symposium on Wireless Communication Systems (ISWCS). IEEE, 2019, pp. 96-101.
C. K. Sheemar and D. Slock, "Receiver design and agc optimization with self interference induced saturation, " in ICASSP 2020-2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2020, pp. 5595-5599.
"3GPP TR 38.811, "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on New Radio (NR) to support non terrestrial networks (Release 15)", " 2019.
"3GPP TR 38.821, "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Solutions for NR to support non-Terrestrial networks (NTN) (Release 16)", " 2021.
Y. Ai, A. Mathur, M. Cheffena, M. R. Bhatnagar, and H. Lei, "Physical layer security of hybrid satellite-fso cooperative systems, " IEEE Photonics Journal, vol. 11, no. 1, pp. 1-14, 2019.
O. A. Topal and G. K. Kurt, "Physical layer authentication for leo satellite constellations, " in 2022 IEEE Wireless Communications and Networking Conference (WCNC). IEEE, 2022, pp. 1952-1957.
T. Ferrer, S. Cespedes, and A. Becerra, "Review and evaluation of mac protocols for satellite iot systems using nanosatellites, " Sensors, vol. 19, no. 8, p. 1947, 2019.
C. Wang, L. Liu, H. Ma, and D. Xia, "A joint optimization scheme for hybrid mac layer in leo satellite supported iot, " IEEE Internet of Things Journal, vol. 8, no. 15, pp. 11 822-11 833, 2021.
M. Emmelmann and H. Bischl, "An adaptive mac layer protocol for atmbased leo satellite networks, " in 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No. 03CH37484), vol. 4. IEEE, 2003, pp. 2698-2702.
C. K. Sheemar, "Hybrid beamforming techniques for massive mimo full duplex radio systems, " Ph.D. dissertation, Ph. D. dissertation, EURECOM, 2022.
C. K. Sheemar and D. Slock, "Hybrid beamforming and combining for millimeter wave full duplex massive mimo interference channel, " in 2021 IEEE Global Communications Conference (GLOBECOM). IEEE, 2021, pp. 1-6.
