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Balancing backhaul load in heterogeneous cloud radio access networks

机译：平衡异构云无线电接入网络中的回程负载

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摘要

Inspired by the explosive growth of mobile data traffic, the severe inter-tier interference, and the fierce competition between the total cost of ownership and revenues for mobile operators, the heterogeneous cloud radio access network (H-CRAN) has been proposed as one of the most prominent ways to handle these challenges. The key idea of the H-CRAN is incorporating cloud computing into a heterogeneous network (HetNet) to enhance coordinated multipoint transmission and reception, cooperative radio resource management, and self-organizing networks, which improve both spectral and energy efficiencies of cellular systems. One of the most critical challenges that hinder the implementation of the H-CRAN is the high transmission demand on the backhauls between the baseband unit (BBU) pool and remote radio heads (RRHs). In this article we suggest that we can balance the workload of different RRHs to alleviate the pressure on the transmission links. Our proposed method is different from but compatible with existing compression techniques that have been widely investigated in the literature to lighten the transmission burden of the backhauls. We also describe the technical challenges in existence during the implementation of our proposal and give preliminary ideas of how to address them.
机译：受移动数据流量的爆炸性增长，严重的层间干扰以及移动运营商的总体拥有成本和收入之间的激烈竞争的启发，异构云无线电接入网络（H-CRAN）已被提议为其中之一。应对这些挑战的最突出方式。 H-CRAN的关键思想是将云计算整合到异构网络（HetNet）中，以增强协作式多点传输和接收，协作无线电资源管理以及自组织网络，从而提高蜂窝系统的频谱和能效。阻碍H-CRAN实施的最关键挑战之一是对基带单元（BBU）池和远程无线电头端（RRH）之间回程的高传输需求。在本文中，我们建议我们可以平衡不同RRH的工作量，以减轻传输链路上的压力。我们提出的方法与现有压缩技术不同，但与现有压缩技术兼容，现有压缩技术已在文献中进行了广泛研究以减轻回程的传输负担。我们还描述了提案实施过程中存在的技术挑战，并给出了如何解决这些挑战的初步思路。

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