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Enabling Efficient Service Function Chains at Terrestrial-Satellite Hybrid Cloud Networks

机译：在地面卫星混合云网络中启用高效的服务功能链

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摘要

The great improvements in both satellite and terrestrial networks have motivated the academic and industrial communities to rethink their integration. As a result, there is an increasing interest in new-generation hybrid satellite-terrestrial networks, where sufficient flexibility should be enabled to deploy customized SFCs to satisfy the growing diversity of user needs. However, it is still challenging to achieve such a nice vision, since many key issues remain unaddressed comprehensively such as framework design, communication procedures and resource optimization. Therefore, in this article, we focus on how to efficiently deploy customized SFCs at terrestrial- satellite hybrid cloud networks. In particular, we first propose an elastic framework used for SFC deployment at clouds, and second propose an efficient SFC mapping approach for improvement of system resource utilization. Finally, we verify the proposed framework at a proof-ofconcept prototype via a number of use cases, and evaluate the proposed mapping approach through extensive simulations based on a realworld topology. Related experimental and simulation results have confirmed the feasibility and benefits of our proposed framework and mapping approach.
机译：卫星和地面网络的巨大改进是激励学术和工业社区重新思考他们的整合。因此，对新一代混合卫星 - 地面网络的兴趣越来越兴趣，其中应该能够启用足够的灵活性来部署定制的SFC以满足用户需求的不断增长的多样性。然而，实现如此美好的愿景仍然具有挑战性，因为许多关键问题仍然完全覆盖，例如框架设计，通信程序和资源优化等。因此，在本文中，我们专注于如何在地面卫星混合云网络上有效地部署自定义的SFC。特别是，我们首先提出了一种用于SFC部署的弹性框架，并且第二提出了一种有效的SFC映射方法，用于提高系统资源利用率。最后，我们通过许多用例验证了概念概念原型的提议框架，并通过基于RealWorld拓扑的广泛仿真评估所提出的映射方法。相关的实验和仿真结果证实了我们提出的框架和绘图方法的可行性和益处。

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