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近年来,在工业界和学术界,人们对多跳延伸的基础网络都很感兴趣,如3GPP中的种概念、IEEE 802.16网状网络、HiperLAN/2通过中继或用户合作分集的网状网延伸覆盖等。本文是对无线界研究论坛第四工作组的大量研究工作和其他人研究工作的综合论述,介绍了重要论题和以中继为背景的应用的评述。文章涵盖了利用多跳中继通信的多种方法,如延伸移动和无线宽带蜂窝网距离的方案(距离对容量的平衡办法)、在高频对抗阴影的方案等。说明了中继是一种降低基础设施部署成本的手段,并指出通过利用空间分集多跳中继可增大蜂窝网的容量。尽管这篇文章着重讨论固定中继,它所介绍的许多概念亦可用于移动中继系统。
In recent years, in industry and academia, people are very interested in basic networks with multi-hop extension, such as the concept of a kind in 3GPP, an IEEE 802.16 mesh network, a mesh network in which HiperLAN / 2 collaborates through relays or users Extended coverage and so on. This article is a comprehensive discussion of a large number of research work conducted by Working Group 4 of the Wireless Forum Research Forum and others’ research work, and presents an overview of important topics and applications in the context of trunking. The article covers several approaches to using multi-hop relay communications, such as a scheme to extend the distance between a mobile and a wireless broadband cellular network (distance to capacity balance), a scheme to combat shadow at high frequencies, and the like. Illustrates that trunking is a means of reducing the cost of deploying an infrastructure and points out that the capacity of a cellular network can be increased by utilizing space diversity multi-hop relay. Although this article focuses on fixed trunks, many of the concepts it introduces can also be used in mobile trunking systems.