Random Access Technology of NTN Network for Low Orbit Satellite
By comparing the differences between NTN communication and ground-based 5G communication, this paper concluded that the random access of low-orbit satellite NTN should be studied. The problems and key technologies of NTN random access were deeply analyzed. A simple and easy to implement frequency of...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Post&Telecom Press Co.,LTD
2024-12-01
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| Series: | 天地一体化信息网络 |
| Subjects: | |
| Online Access: | http://www.j-sigin.com.cn/zh/article/doi/10.11959/j.issn.2096-8930.2024035/ |
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| Summary: | By comparing the differences between NTN communication and ground-based 5G communication, this paper concluded that the random access of low-orbit satellite NTN should be studied. The problems and key technologies of NTN random access were deeply analyzed. A simple and easy to implement frequency offset compensation method for satellite beam-pointing sensing was proposed to solve the Doppler frequency offset problem of high dynamic signals. A real-time scheduling method of multi-point beam sub-region coverage was proposed to solve the problem of beam control for low orbit satellite access. A new idea of using reinforcement learning method to design access class barring factors was proposed to solve the random access congestion problem in low orbit NTN scenario. |
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| ISSN: | 2096-8930 |