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Virtualization of cellular network EPC gateways based on a scalable SDN architecture

机译：基于可扩展SDN架构的蜂窝网络EPC网关的虚拟化

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The gateways in mobile cellular networks are capable to handle the traffic from millions of subscribers at the same time, while providing high availability guarantee. Such entities are not only expensive, but also inflexible in terms of system deployment and maintenance. In this work, we investigate the feasibilities to virtualize gateway entities used in the Long Term Evolution (LTE) Evolved Packet Core (EPC). We propose a novel PDN Gateway (PGW) architecture, which decouples the control plane from the user plane by using Software Defined Network (SDN) technology. Moreover, we propose to run the user plane forwarding function on low cost IT hardware. The major advantages of our proposal are two-fold. First, our proposal lowers down the expenditure of operating services in LTE networks. Second, fine-grained resource management policies can be implemented in our virtualized gateway, which brings agility and reliability for the mobile cellular network.
机译：移动蜂窝网络中的网关能够同时处理来自数百万用户的流量，同时提供高可用性保证。这些实体不仅昂贵，而且在系统部署和维护方面也是不灵活的。在这项工作中，我们调查虚拟化长期演进（LTE）演进分组核（EPC）中使用的网关实体的可行性。我们提出了一种新颖的PDN网关（PGW）架构，其通过使用软件定义的网络（SDN）技术将控制平面与用户平面分离。此外，我们建议在低成本IT硬件上运行用户平面转发功能。我们提案的主要优势是两倍。首先，我们的提案降低了LTE网络的运营服务支出。其次，可以在我们的虚拟化网关中实施细粒度的资源管理策略，这为移动蜂窝网络带来了灵活性和可靠性。

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