A Novel Pattern for Global Ubiquitous Interconnection: Key Technologies and Challenges of Direct-to-Smartphone

HE Yuanzhi; XIAO Yongwei; ZHANG Shijie; FENG Long; LI Zhiqiang

doi:10.11999/JEIT240032

Volume 46 Issue 5

May 2024

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Article Navigation > Journal of Electronics & Information Technology > 2024 > 46(5): 1591-1603

HE Yuanzhi, XIAO Yongwei, ZHANG Shijie, FENG Long, LI Zhiqiang. A Novel Pattern for Global Ubiquitous Interconnection: Key Technologies and Challenges of Direct-to-Smartphone[J]. Journal of Electronics & Information Technology, 2024, 46(5): 1591-1603. doi: 10.11999/JEIT240032

Citation:

HE Yuanzhi, XIAO Yongwei, ZHANG Shijie, FENG Long, LI Zhiqiang. A Novel Pattern for Global Ubiquitous Interconnection: Key Technologies and Challenges of Direct-to-Smartphone[J]. Journal of Electronics & Information Technology, 2024, 46(5): 1591-1603. doi: 10.11999/JEIT240032

Citation:

HE Yuanzhi, XIAO Yongwei, ZHANG Shijie, FENG Long, LI Zhiqiang. A Novel Pattern for Global Ubiquitous Interconnection: Key Technologies and Challenges of Direct-to-Smartphone[J]. Journal of Electronics & Information Technology, 2024, 46(5): 1591-1603. doi: 10.11999/JEIT240032

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A Novel Pattern for Global Ubiquitous Interconnection: Key Technologies and Challenges of Direct-to-Smartphone

doi: 10.11999/JEIT240032

1.
Institute of Systems Engineering, Academy of Military Sciences, Beijing 100141, China
2.
54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China
3.
Yinhe Hangtian (Beijing) Internet Technology Co., Ltd., Beijing 100192, China

Received Date: 2024-01-19
Rev Recd Date: 2024-04-17

Available Online: 2024-05-06

Publish Date: 2024-05-30

Abstract

Abstract

Satellite communication plays a crucial role in addressing blind spots and enhancing ubiquitous coverage for future global ubiquitous communication needs. Direct-to-Smartphone(DS) technology, as a technological means to achieve global integrated space-ground and intelligent connection of all things in the future 6G network, has become a hot development topic worldwide in the past two years and has received widespread attention. The development status and mainstream technical routes of DS technology in this article both domestically and internationally are introduced. The development challenges have been analyzed on DS technology in terms of limited frequency resource usage, broadband service requirements of DS, massive user business with time-varying and non-uniform distribution, high-dynamic effect of low earth orbit satellite, ultra-dense multi-beam influence, and high-density integration of smartphone. Key solutions such as satellite-ground co-frequency sharing, ultra-large array spaceborne multi-beam antenna, multi-dimensional resource management and control of satellite and ground, adapting to high dynamic satellite air interface system, on-demand scheduling of extremely narrow beam, and highly integrated smartphone design are proposed in this paper. Finally, the future development of DS technology is discussed.
- Satellite communication,
- 6G,
- Direct-to-Smartphone (DS),
- Non-terrestrial network

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References(22)

References

[1]	GIORDANI M and ZORZI M. Non-terrestrial networks in the 6G era: Challenges and opportunities[J]. IEEE Network, 2021, 35(2): 244–251. doi: 10.1109/MNET.011.2000493.
[2]	栾宁, 熊轲, 张煜, 等. 6G: 典型应用、关键技术与面临挑战[J]. 物联网学报, 2022, 6(1): 29–43. doi: 10.11959/j.issn.2096−3750.2022.00253. LUAN Ning, XIONG Ke, ZHANG Yu, et al. 6G: Typical applications, key technologies and challenges[J]. Chinese Journal on Internet of Things, 2022, 6(1): 29–43. doi: 10.11959/j.issn.2096-3750.2022.00253. doi: 10.11959/j.issn.2096−3750.2022.00253.
[3]	赛迪智库无线电管理研究所. 6G概念及愿景白皮书[EB/OL]. http://report.ccidgroup.com/viewPdf/d418285d51a047a9ae03fef21128bf9d, 2023.
[4]	HE Yuanzhi, LI Yuan, and YIN Hao. Co-frequency interference analysis and avoidance between NGSO constellations: Challenges, techniques, and trends[J]. China Communications, 2023, 20(7): 1–14. doi: 10.23919/JCC.fa.2022-0865.202307.
[5]	EULER S, FU Xiaotian, HELLSTEN S, et al. Using 3GPP technology for satellite communication[J]. Ericsson Technology Review, 2023, 2023(6): 2–12. doi: 10.23919/ETR.2023.10173867.
[6]	蓝天翼. “手机直连卫星”的发展与挑战[J]. 国际太空, 2023(3): 58–62. doi: 10.3969/j.issn.1009-2366.2023.03.012. LAN Tianyi. The development and challenges of "mobile direct connection to satellite"[J]. Space International, 2023(3): 58–62. doi: 10.3969/j.issn.1009-2366.2023.03.012.
[7]	NSR, finally, spacex joining the direct satellite-to-device race[EB/OL].https://www.nsr.com/finally-spacex-joining-the-direct-satellite-to-device-race, 2023.
[8]	HOSSEINIAN M, CHOI J P, CHANG S H, et al. Review of 5G NTN standards development and technical challenges for satellite integration with the 5G network[J]. IEEE Aerospace and Electronic Systems Magazine, 2021, 36(8): 22–31. doi: 10.1109/MAES.2021.3072690.
[9]	ARANITI G, IERA A, PIZZI S, et al. Toward 6G non-terrestrial networks[J]. IEEE Network, 2022, 36(1): 113–120. doi: 10.1109/MNET.011.2100191.
[10]	ITU-R. Radio regulations[R]. Geneva, 2020.
[11]	孙耀华, 彭木根. 面向手机直连的低轨卫星通信: 关键技术、发展现状与未来展望[J]. 电信科学, 2023, 39(2): 25–36. doi: 10.11959/j.issn.1000-0801.2023031. SUN Yaohua and PENG Mugen. Low earth orbit satellite communication supporting direct connection with mobile phones: Key technologies, recent progress and future directions[J]. Telecommunications Science, 2023, 39(2): 25–36. doi: 10.11959/j.issn.1000-0801.2023031.
[12]	SHI Jia, HU Junfan, YUE Yang, et al. Outage probability for OTFS based downlink LEO satellite communication[J]. IEEE Transactions on Vehicular Technology, 2022, 71(3): 3355–3360. doi: 10.1109/TVT.2022.3144466.
[13]	何元智, 彭聪, 于季弘, 等. 面向密集多波束组网的卫星通信系统资源调度算法[J]. 通信学报, 2021, 42(4): 109–118. doi: 10.11959/j.issn.1000-436x.2021102. HE Yuanzhi, PENG Cong, YU Jihong, et al. Resource scheduling algorithm of satellite communication system for future multi-beam dense networking[J]. Journal on Communications, 2021, 42(4): 109–118. doi: 10.11959/j.issn.1000-436x.2021102.
[14]	WANG Wenjin, CHEN Tingting, DING Rui, et al. Location-based timing advance estimation for 5G integrated LEO satellite communications[J]. IEEE Transactions on Vehicular Technology, 2021, 70(6): 6002–6017. doi: 10.1109/TVT.2021.3079936.
[15]	ZHEN Li, QIN Hao, SONG Bin, et al. Random access preamble design and detection for mobile satellite communication systems[J]. IEEE Journal on Selected Areas in Communications, 2018, 36(2): 280–291. doi: 10.1109/JSAC.2018.2804138.
[16]	朱剑锋, 孙耀华, 彭木根. 低轨卫星通信系统的前导序列设计[J]. 北京邮电大学学报, 2022, 45(6): 75–81. doi: 10.13190/j.jbupt.2022-163. ZHU Jianfeng, SUN Yaohua, and PENG Mugen. Preamble design for low earth orbit communication systems[J]. Journal of Beijing University of Posts and Telecommunications, 2022, 45(6): 75–81. doi: 10.13190/j.jbupt.2022-163.
[17]	KRISHNAMURTHY V, ATHAUDAGE C R N, and HUANG Dawei. Adaptive OFDM synchronization algorithms based on discrete stochastic approximation[J]. IEEE Transactions on Signal Processing, 2005, 53(4): 1561–1574. doi: 10.1109/TSP.2005.843710.
[18]	HUANG Miaona, CHEN Jun, and FENG Suili. Synchronization for OFDM-based satellite communication system[J]. IEEE Transactions on Vehicular Technology, 2021, 70(6): 5693–5702. doi: 10.1109/TVT.2021.3069580.
[19]	MORELLI M and MORETTI M. A robust maximum likelihood scheme for PSS detection and integer frequency offset recovery in LTE systems[J]. IEEE Transactions on Wireless Communications, 2016, 15(2): 1353–1363. doi: 10.1109/TWC.2015.2489206.
[20]	WANG Jiawei, JIANG Chunxiao, KUANG Linling, et al. Iterative Doppler frequency offset estimation in satellite high-mobility communications[J]. IEEE Journal on Selected Areas in Communications, 2020, 38(12): 2875–2888. doi: 10.1109/JSAC.2020.3005497.
[21]	ROBERTS L G. ALOHA packet system with and without slots and capture[J]. ACM SIGCOMM Computer Communication Review, 1975, 5(2): 28–42. doi: 10.1145/1024916.1024920.
[22]	LIVA G. Graph-based analysis and optimization of contention resolution diversity slotted ALOHA[J]. IEEE Transactions on Communications, 2011, 59(2): 477–487. doi: 10.1109/TCOMM.2010.120710.100054.