A4 Article in conference proceedings
Joint User Association and Dynamic Beam Operation for High Latitude Muti-beam LEO Satellites (2021)
Duan, R., Liang, C., Zhang, D., Hämäläinen, T., & Chen, Q. (2021). Joint User Association and Dynamic Beam Operation for High Latitude Muti-beam LEO Satellites. In M. Fais Mansor, N. Ramli, & M. Ismail (Eds.), APCC 2021 : 26th IEEE Asia-Pacific Conference on Communications. IEEE. https://doi.org/10.1109/APCC49754.2021.9609843
JYU authors or editors
Publication details
All authors or editors: Duan, Ruiji; Liang, Chengchao; Zhang, Di; Hämäläinen, Timo; Chen, Qianbin
Parent publication: APCC 2021 : 26th IEEE Asia-Pacific Conference on Communications
Parent publication editors: Fais Mansor, Mohd; Ramli, Nordin; Ismail, Mahamod
Conference:
- IEEE Asia-Pacific Conference on Communications
Place and date of conference: Kuala Lumpur, Malaysia, 11.-13.10.2021
ISBN: 978-1-7281-7255-2
eISBN: 978-1-7281-7254-5
Publication year: 2021
Publication date: 11/10/2021
Publisher: IEEE
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1109/APCC49754.2021.9609843
Publication open access: Not open
Publication channel open access:
Abstract
In Low Earth Orbit (LEO) satellites, which run in polar orbit, the area of overlap among beams becomes wider as the latitude of satellites increases, which leads to intolerable interference and extra energy consumption. To minimize the onboard power with QoS requirements, we propose an energy optimization model with considering power allocation, user association and dynamic beam ON/OFF operation jointly. Moreover, the frequent beam ON/OFF operations lead to the large number of user handovers, so handover cost is also considered in the model. The original problem is decomposed into two levels due to the high coupling of variables and the successive convex approximation is employed. A low complexity greedy ON/OFF iteration is proposed to adapt to dynamic topology of LEO. Simulation results show that the proposed scheme can effectively reduce the system energy consumption.
Keywords: communications satellites; energy consumption (energy technology); optimisation; algorithms
Free keywords: LEO; high latitude; power allocation; user association; beam operation; handover
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2021
JUFO rating: 1
