Benefits analysis of beam hopping in satellite mobile system with unevenly distributed traffic

• Published in: China communications Vol. 18; no. 9; pp. 11 - 23
• Main Authors: Li, Yitao, Luo, Zhongqiang, Zhou, Wuyang, Zhu, Jinkang
• Format: Journal Article
• Language: English
• Published: China Institute of Communications 01.09.2021; School of Automation and Information Engineering,Sichuan University of Science and Engineering,Artificial Intelligence Key Laboratory of Sichuan Province,Yibin 644000,China%CAS Key Laboratory of Wireless-Optical Communications,Chinese Academy of Sciences,School of Information Science and Technology,University of Science and Technology of China (USTC),Hefei 230026,China
• Subjects: Bandwidth; beam hopping; Color; Fading channels; Interference; performance analysis; Resource management; Satellite broadcasting; satellite communication; Satellites; space-air-ground integrated network; unevenly distributed traffic; unevenly dis-tributed traffic; satellite communication; beam hopping; space-air-ground integrated network; performance analysis
• ISSN: 1673-5447
• DOI: 10.23919/JCC.2021.09.002

Satellite mobile system and space-air- ground integrated network have a prominent superiority in global coverage which plays a critical role in remote and non-land regions, as well as emergency communications. However, due to the gradual angle attenuations of the satellite antennas, it is difficult to achieve full frequency multiplex among different beams as terrestrial 5G network. Multi-color frequency reuse is widely adopted in both academic and industry. Beam hopping scheme has attracted the attention of researchers recently due to the allocation flexibility. In this paper, we focus on analyzing the performance benefits of beam hopping compared with multi-color frequency reuse scheme in non-uniform user and traffic distributions in satellite system. Aerial networks are also introduced to form a space-air- ground integrated network for coverage enhancement, and the capacity improvement is analyzed. Besides, additional improved techniques are provided to make comprehensive analysis and comparisons. Theoretical analysis and simulation results indicate that the beam hopping scheme has a prominent superiority in the system capacity compared with the traditional multicolor frequency reuse scheme in both satellite mobile system and future space-air-ground integrated network.