Network programming and virtualization are technological trends being incrementally introduced in operational networks. This creates an environment where new innovations can be incorporated, facilitating also the evolution of the way in which existing services are delivered. These changes, however, are not only motivated by technical reasons. External factors, such as regulation, can trigger the evolution of existing services. Roaming services are an example of this two-sided situation. From the technical perspective, roaming users typically experiment worst performance than local users on the same network, since their traffic is usually routed through the home network. Besides that, due to recent regulation changes introduced in Europe for roaming services, known as Roam Like at Home (RLAH), roaming is charged at domestic prices. Both aspects are severely challenging the current mode of operation of roaming services as delivered nowadays by mobile operators. This paper presents the design of a virtualized based roaming solution, including an experimental assessment, as well as an economic insight of the concept.

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SDN 和 NFV 技术在基于虚拟化的漫游解决方案中的适用性

网络编程和虚拟化是运营网络中逐渐引入的技术趋势。这创造了一个可以融入新创新的环境，也促进了现有服务交付方式的演变。然而，这些变化不仅仅出于技术原因。外部因素，例如监管，可以触发现有服务的演变。漫游服务是这种双向情况的一个例子。从技术角度来看，漫游用户通常比同一网络上的本地用户体验最差的性能，因为他们的流量通常通过家庭网络路由。除此之外，由于欧洲最近对漫游服务（称为在家漫游 (RLAH)）引入的监管变化，漫游按国内价格收费。这两个方面都严重挑战了移动运营商如今提供的漫游服务的当前操作模式。本文介绍了基于虚拟化的漫游解决方案的设计，包括实验评估以及对该概念的经济见解。