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首页> 外文期刊>Communications Surveys & Tutorials, IEEE >Separation Framework: An Enabler for Cooperative and D2D Communication for Future 5G Networks
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Separation Framework: An Enabler for Cooperative and D2D Communication for Future 5G Networks

机译：分离框架：未来5G网络合作和D2D通信的推动者

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摘要

Soaring capacity and coverage demands dictate that future cellular networks need to migrate soon toward ultra-dense networks. However, network densification comes with a host of challenges that include compromised energy efficiency, complex interference management, cumbersome mobility management, burdensome signaling overheads, and higher backhaul costs. Interestingly, most of the problems that beleaguer network densification stem from legacy networks' one common feature, i.e., tight coupling between the control and data planes regardless of their degree of heterogeneity and cell density. Consequently, in wake of 5G, control and data planes separation architecture (SARC) has recently been conceived as a promising paradigm that has potential to address most of the aforementioned challenges. In this survey, we review various proposals that have been presented in the literature so far to enable SARC. More specifically, we analyze how and to what degree various SARC proposals address the four main challenges in network densification, namely: energy efficiency, system level capacity maximization, interference management, and mobility management. We then focus on two salient features of future cellular networks that have not yet been adapted in legacy networks at wide scale and thus remain a hallmark of 5G, i.e., coordinated multipoint (CoMP) and device-to-device (D2D) communications. After providing necessary background on CoMP and D2D, we analyze how SARC can particularly act as a major enabler for CoMP and D2D in context of 5G. This article thus serves as both a tutorial as well as an up-to-date survey on SARC, CoMP, and D2D. Most importantly, this survey provides an extensive outlook of challenges and opportunities that lie at the crossroads of these three mutually entangled emerging technologies.
机译：不断增长的容量和覆盖范围要求表明，未来的蜂窝网络需要尽快向超密集网络迁移。但是，网络致密化带来了许多挑战，其中包括能源效率下降，复杂的干扰管理，繁琐的移动性管理，沉重的信令开销以及更高的回程成本。有趣的是，困扰网络密集化的大多数问题源于传统网络的一个共同特征，即控制平面和数据平面之间的紧密耦合，而不论它们的异质程度和单元密度如何。因此，随着5G的到来，控制和数据平面分离架构（SARC）最近被认为是一种有前途的范例，具有解决上述大多数挑战的潜力。在此调查中，我们回顾了迄今为止文献中提出的各种建议，以启用SARC。更具体地说，我们分析了各种SARC建议如何以及在何种程度上解决了网络致密化方面的四个主要挑战，即：能源效率，系统级容量最大化，干扰管理和移动性管理。然后，我们专注于未来蜂窝网络的两个显着特征，这些特征尚未在大规模传统网络中进行调整，因此仍然是5G的标志，即协调多点（CoMP）和设备到设备（D2D）通信。在提供了有关CoMP和D2D的必要背景之后，我们分析了SARC如何在5G背景下特别充当CoMP和D2D的主要推动者。因此，本文既可以作为教程，也可以作为有关SARC，CoMP和D2D的最新调查。最重要的是，这项调查提供了对这三种相互纠缠的新兴技术的十字路口的挑战和机遇的广阔视野。

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