The MLSTIN is considered as a powerful architecture to meet the heavy consumer demand for wireless data access in the coming 5G ecosystem. However, due to the inherent heterogeneity of MLSTIN, it is challenging to manage the diverse physical devices for large amounts of traffic delivery with optimal network performance. As promoted by the advantage of SDN, MLSTIN is expected to be a flexible paradigm to dynamically provision various applications and services. In light of this, a cross-domain SDN architecture that divides the MLSTIN into satellite, aerial, and terrestrial domains is proposed in this article. We discuss the design and implementation details of this architecture and then point out some challenges and open issues. Moreover, illustrative results validate that the proposed architecture can significantly improve the efficiencies of configuration updating and decision making in MLSTIN.

中文翻译：

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多层天地一体化网络的跨域SDN架构


MLSTIN 被认为是一种强大的架构，可以满足未来 5G 生态系统中消费者对无线数据访问的巨大需求。然而，由于 MLSTIN 固有的异构性，管理不同的物理设备以实现大量流量传输并保持最佳网络性能具有挑战性。在SDN优势的推动下，MLSTIN有望成为动态提供各种应用和服务的灵活范例。鉴于此，本文提出了一种跨域SDN架构，将MLSTIN分为卫星域、空中域和地面域。我们讨论该架构的设计和实现细节，然后指出一些挑战和悬而未决的问题。此外，说明性结果验证了所提出的架构可以显着提高 MLSTIN 中配置更新和决策的效率。