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arXiv 1406.0928cs.NI
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支持灾难恢复的4G移动通信网络

Enabling Disaster Resilient 4G Mobile Communication Networks

Karina Gomez, Leonardo Goratti, Tinku Rasheed, Laurent Reynaud

摘要:

4G长期演进(LTE)是预期优于前几代的蜂窝技术,并且通过利用最先进的无线电接入技术(即,OFDMA、SC-FDMA、MIMO)在某种程度上彻底改变用户体验。然而,用户设备(UE)、基站(eNB)和演进分组核心(EPC)之间的强依赖性限制了这种网络中的灵活性、可扩展性和弹性。在UE-eNB或eNB-EPC之间的通信链路中断的情况下,UE实际上不能通信。在这篇文章中,我们重塑了4G移动网络,使其朝着更加虚拟和分布式的架构发展,以提高灾难恢复能力,大幅降低UE、eNB和EPC之间的依赖性。这项工作的贡献是双重的。我们首先介绍了灵活的管理实体(FME),一个分布式实体,利用虚拟化的EPC功能在4G蜂窝系统。其次,我们介绍了一种简单而新颖的设备到设备(D2 D)通信方案,该方案允许物理邻近的UE直接通信,而无需与eNB进行协调。

英文摘要:

The 4G Long Term Evolution (LTE) is the cellular technology expected to outperform the previous generations and to some extent revolutionize the experience of the users by taking advantage of the most advanced radio access techniques (i.e. OFDMA, SC-FDMA, MIMO). However, the strong dependencies between user equipments (UEs), base stations (eNBs) and the Evolved Packet Core (EPC) limit the flexibility, manageability and resiliency in such networks. In case the communication links between UEs-eNB or eNB-EPC are disrupted, UEs are in fact unable to communicate. In this article, we reshape the 4G mobile network to move towards more virtual and distributed architectures for improving disaster resilience, drastically reducing the dependency between UEs, eNBs and EPC. The contribution of this work is twofold. We firstly present the Flexible Management Entity (FME), a distributed entity which leverages on virtualized EPC functionalities in 4G cellular systems. Second, we introduce a simple and novel device-todevice (D2D) communication scheme allowing the UEs in physical proximity to communicate directly without resorting to the coordination with an eNB.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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