Scholarlink

<p>As 6G mobile communications aim for global coverage, integrated satellite-terrestrial networks are emerging as a key solution for overcoming coverage challenges, particularly in remote regions, through the convergence of terrestrial base stations (BS) and low-Earth orbit (LEO) satellites. However, the distinct characteristics of BS and satellites result in differing performance when handling diverse services. How these varied services are matched with BSs, satellites, antennas, and wireless resources significantly impacts the performance of satellite-terrestrial integrated networks. Therefore, to address the differentiated requirements of high-speed (HS) traffic and low-latency high-reliability (LLHR) traffic, this paper proposes the dynamic antenna allocation and co-scheduling of terrestrial BS and satellite (DACTS) framework. By enabling flexible access selection between satellites and terrestrial BS as well as flexible multi-antenna allocation for satellites, this framework identifies the optimal resource allocation scheme. It enhances the throughput of HS traffic while satisfying the requirements of LLHR traffic. Through analyzing the signal-to-interference-plus-noise ratio of users, the optimal antenna precoding and modulation scheme is derived, and the problem of antenna precoding is transformed into a user group-based frequency allocation problem. In addition, based on the stochastic network calculus (SNC) theory, the equivalent channel capacities and the approximate value of the delay violation probability of Ricean channels and Rayleigh channels are calculated. Finally, this paper solves the issues of frequency allocation and access selection through a stepwise optimization approach.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Flexible access and integrated transmission for multi-service in satellite-terrestrial networks

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月17日

查看全文
  • Jingxuan Zhang,
  • Bowen Han,
  • Kangjie Zhang

摘要

As 6G mobile communications aim for global coverage, integrated satellite-terrestrial networks are emerging as a key solution for overcoming coverage challenges, particularly in remote regions, through the convergence of terrestrial base stations (BS) and low-Earth orbit (LEO) satellites. However, the distinct characteristics of BS and satellites result in differing performance when handling diverse services. How these varied services are matched with BSs, satellites, antennas, and wireless resources significantly impacts the performance of satellite-terrestrial integrated networks. Therefore, to address the differentiated requirements of high-speed (HS) traffic and low-latency high-reliability (LLHR) traffic, this paper proposes the dynamic antenna allocation and co-scheduling of terrestrial BS and satellite (DACTS) framework. By enabling flexible access selection between satellites and terrestrial BS as well as flexible multi-antenna allocation for satellites, this framework identifies the optimal resource allocation scheme. It enhances the throughput of HS traffic while satisfying the requirements of LLHR traffic. Through analyzing the signal-to-interference-plus-noise ratio of users, the optimal antenna precoding and modulation scheme is derived, and the problem of antenna precoding is transformed into a user group-based frequency allocation problem. In addition, based on the stochastic network calculus (SNC) theory, the equivalent channel capacities and the approximate value of the delay violation probability of Ricean channels and Rayleigh channels are calculated. Finally, this paper solves the issues of frequency allocation and access selection through a stepwise optimization approach.