The integrated communication system has received increasing attention to establish a fully connected world in the eras of beyond fifth generation wireless communication and sixth generation wireless communication systems, where a wide range of services with distinct requirements needs to be accommodated, covering distinct scenarios such as terrestrial, ocean, outer space, and underwater. In this article, we first propose the idea of feeder communication, which aims to provide truly seamless and ubiquitous on-demand coverage for any human activity. Compared to the traditional integrated networks, feeder communication focuses on reliable data transmission over multiple propagation media such as outer space, stratosphere, troposphere, and underwater. Due to the significant differences of radio propagation characteristics in different media, feeder communication requires a large number of feeder nodes for inter-medium transmissions, a well-designed network structure, and intelligent wireless transmission and control schemes. The basic concepts, features, application scenarios, network architecture, and the corresponding wireless transmission technologies of feeder communication are presented in detail, and challenges and future directions are also pointed out in this article.

中文翻译：

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集成网络的馈线通信

在超越第五代无线通信和第六代无线通信系统的时代，集成通信系统已受到越来越多的关注，以建立一个完全连接的世界，在该时代中，需要容纳各种具有不同要求的服务，涵盖诸如陆地等不同场景。 ，海洋，外太空和水下。在本文中，我们首先提出馈线通信的想法，该想法旨在为任何人类活动提供真正无缝且随处可见的按需覆盖。与传统的集成网络相比，馈线通信侧重于通过多种传播介质（如外层空间，平流层，对流层和水下）进行可靠的数据传输。由于不同媒体的无线电传播特性差异很大，馈线通信需要大量的馈线节点进行中间传输，精心设计的网络结构以及智能的无线传输和控制方案。详细介绍了馈线通信的基本概念，特征，应用场景，网络体系结构和相应的无线传输技术，并指出了挑战和未来的方向。