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The Space-Terrestrial Integrated Network (STIN) is considered to be a promising paradigm for realizing worldwide wireless connectivity in sixth-Generation (6G) wireless communication systems. Unfortunately, excessive interference in the STIN degrades the wireless links and leads to poor performance, which is a bottleneck that prevents its commercial deployment. In this article, the crucial features and challenges of STIN-based interference are comprehensively investigated, and some candidate solutions for Interference Management (IM) are summarized. As traditional IM techniques are designed for single-application scenarios or specific types of interference, they cannot meet the requirements of the STIN architecture. To address this issue, we propose a self-adaptation IM method that reaps the potential benefits of STIN and is applicable to both rural and urban areas. A number of open issues and potential challenges for IM are discussed, which provide insights regarding future research directions related to STIN.


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Interference management in 6G space and terrestrial integrated networks: Challenges and approaches

Show Author's information Shi YanXueyan CaoZile LiuXiqing Liu*( )
State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Abstract

The Space-Terrestrial Integrated Network (STIN) is considered to be a promising paradigm for realizing worldwide wireless connectivity in sixth-Generation (6G) wireless communication systems. Unfortunately, excessive interference in the STIN degrades the wireless links and leads to poor performance, which is a bottleneck that prevents its commercial deployment. In this article, the crucial features and challenges of STIN-based interference are comprehensively investigated, and some candidate solutions for Interference Management (IM) are summarized. As traditional IM techniques are designed for single-application scenarios or specific types of interference, they cannot meet the requirements of the STIN architecture. To address this issue, we propose a self-adaptation IM method that reaps the potential benefits of STIN and is applicable to both rural and urban areas. A number of open issues and potential challenges for IM are discussed, which provide insights regarding future research directions related to STIN.

Keywords: power control, Interference Management (IM), dynamic frequency sharing, Space-Terrestrial Integrated Networks (STIN)

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Publication history

Received: 14 October 2020
Revised: 12 November 2020
Accepted: 03 December 2020
Published: 30 December 2020
Issue date: December 2020

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© All articles included in the journal are copyrighted to the ITU and TUP 2020

Acknowledgements

This work was supported in part by the National Key R&D Program of China (No. 2020YFB1806703), the National Natural Science Foundation of China (No. 61901315), the State Major Science and Technology Special Project (No. 2018ZX03001023), and the Fundamental Research Funds for the Central Universities (No. 2020RC03).

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© All articles included in the journal are copyrighted to the ITU and TUP. This work is available under the CC BY-NC-ND 3.0 IGO license: https://creativecommons.org/licenses/by-nc-nd/3.0/igo/.

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