Device-to-device communications for enhancing quality of experience in software defined multi-tier LTE-A networks
Device-to-device communications for enhancing quality of experience in software defined multi-tier LTE-A networks
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DOI：
10.1109/mnet.2015.7166190
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发表时间：
2015-07
期刊：
影响因子：
9.3
通讯作者：
Jiajia Liu;Shangwei Zhang;N. Kato;H. Ujikawa;Ken-ichi Suzuki
中科院分区：
文献类型：
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作者：
Jiajia Liu;Shangwei Zhang;N. Kato;H. Ujikawa;Ken-ichi Suzuki
3GPP一直在开发LTE-A标准，通过利用各种无线电接入技术来为丰富多样的移动连接设备提供无处不在的无缝宽带接入，从而显著增强蜂窝网络的性能，这些设备通常无论在哪里或在什么时间接入都需要高QOE。因此，它对运营商端的集中式网络管理提出了前所未有的严格要求，在能够完全支持所有LTE-A技术之前，必须克服设计、管理和配置网络架构、协议和算法的巨大复杂性。值得注意的是，软件定义的无线网络概念似乎是解决这种复杂性的一个很有前途的方向，它将控制逻辑与所有网络元素解耦，然后在LTE-A网络中提供细粒度的控制和测量。为此，我们在本文中提出了一种基于设备到设备通信的算法来提高软件定义的多层LTE-A网络中用户的QOE。除了讨论值得进一步研究的研究问题外，我们还给出了数值结果来说明将所提出的算法应用于典型的3GPP网络场景可以获得的性能提升。
3GPP has been developing LTE-A standard to significantly enhance the performance of cellular networks by utilizing various radio access techniques to provide ubiquitous and seamless broadband access to a rich diversity of mobile connected devices, which usually demand high QoE in spite of of access location or time. Consequently, it imposes unprecedented stringent requirements on centralized network management at the operator side, which has to overcome formidable complexity in designing, managing, and configuring network architectures, protocols, and algorithms before being able to fully support all LTE-A techniques. It is noticed that the software defined wireless network concept appears to be a promising direction to address such complexity, by decoupling control logic from all network elements and then providing fine-grained control and measurement in LTE-A networks. Toward this end, we propose in this article a device-to-device communication-based algorithm to enhance the QoE of users in software defined multi-tier LTE-A networks. Besides discussing research issues that deserve further study, we also present numerical results to illustrate the performance gains that can be achieved by applying the proposed algorithm to a typical 3GPP network scenario.