An SDN Based Testbed for Dynamic Network Slicing in Satellite-Terrestrial Networks

Mendoza, Fabián; Minardi, Mario; Chatzinotas, Symeon; Lei, Lei; Vu, Thang X.

doi:10.1109/meditcom49071.2021.9647537

Cited by 10 publications

(7 citation statements)

References 17 publications

(15 reference statements)

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“…We developed MIRSAT [33] as an enhanced version of the testbed that we proposed in [34]. In [34], the testbed has three main software components.…”

Section: A Experimental Testbed Setupmentioning

confidence: 99%

“…We developed MIRSAT [33] as an enhanced version of the testbed that we proposed in [34]. In [34], the testbed has three main software components. The substrate network, emulated in Mininet [35], where the nodes are OpenFlow enabled switches, the RYU Software Defined Networking (SDN) controller [36] which has full control of the Mininet switches and the VNE algorithm in Matlab, directly connected to the SDN controller.…”

Section: A Experimental Testbed Setupmentioning

confidence: 99%

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Virtual Network Embedding for NGSO Systems: Algorithmic Solution and SDN-Testbed Validation

Minardi

Lei

et al. 2023

IEEE Trans. Netw. Serv. Manage.

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Non-Geostationary Orbit satellite (NGSO) is an essential element in 5G Non-Terrestrial Networks (NTNs), which can operate either independently or as complementary parts to terrestrial systems to boost the network capacity, coverage and resilience. Due to the highly dynamic topologies, one of the challenges in NGSO is how to harmonize the network virtualized resources to satisfy diverse quality of service requirements in an efficient manner. In this paper, we investigate Virtual Network Embedding (VNE) for integrated NGSO-terrestrial systems while considering dynamic topologies. We propose a Mixed Binary Linear Programming (MBLP) formulation for a Dynamic Topology-Aware VNE (DTA-VNE) algorithm. Given priori information about the network's evolution over time, DTA-VNE plans the embedding for each Virtual Network Request (VNR) over its lifetime. In a highly dynamic environment, the VNE decision can be varying for different VNRs at the expense of a considerable cost of migrating traffic and reconfiguring resources. DTA-VNE aims at minimizing this migration cost to avoid unnecessary remappings. To tackle the exponential complexity of the MBLP, we propose an efficient algorithm based on relaxation approaches (DTA-R) to solve large-scale problems. In numerical results, the effectiveness of the proposed DTA-R is demonstrated with much lower migration cost than the conventional implementations. The trade-off between the computation time and migration cost of DTA-R is studied. Finally, we test DTA-R and the baselines in our developed MultI-layer awaRe SDN-based testbed for SAtellite-Terrestrial networks (MIRSAT) to precisely quantify the packet lost for each migration. DTA-R proved to reduce the packet lost by ∼ 2.5 − 5% compared to baselines.

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“…We developed MIRSAT [33] as an enhanced version of the testbed that we proposed in [34]. In [34], the testbed has three main software components.…”

Section: A Experimental Testbed Setupmentioning

confidence: 99%

Section: A Experimental Testbed Setupmentioning

confidence: 99%

Virtual Network Embedding for NGSO Systems: Algorithmic Solution and SDN-Testbed Validation

Minardi

Lei

et al. 2023

IEEE Trans. Netw. Serv. Manage.

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“…Open vSwitch is the mainstream virtual switch option, which is also used in the surveyed studies [22], [44], [57], [66]. The SDN controller is the key component of an SDN-enabled network and there are many choices, e.g., POX (used in [63]), Floodlight (used in [57]), Ryu (used in [65], [67]), ONOS (used in [45], [48], [49]) and OpenDaylight (used in [22]).…”

Section: ) Sdn Toolsmentioning

confidence: 99%

“…Compared with MATLAB, some open source programming languages and platforms can be used free of charge, e.g., Python, which has been used in some of the surveyed studies [47], [65], [69]. Compared with MATLAB, the other platforms lack the toolboxes for communication simulations and MATLAB is still the dominant option.…”

Section: ) Programming Languages and Platformsmentioning

confidence: 99%

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Network Simulators for Satellite-Terrestrial Integrated Networks: A Survey

Jiang,

Zhan,

Xiao

et al. 2023

IEEE Access

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Satellite-terrestrial integrated networks have been proposed as a promising solution to provide global seamless coverage in next-generation communication networks. To enable the integration of satellite and terrestrial networks, network simulation is a fundamental and economically efficient step compared to the high cost of field trial and real-world system deployment. Simulation challenges arise with the fast growth of LEO mega-constellations, including frequent re-connection and handover, long satellite transmission delay, high dynamics of satellite network topologies, and the integration of heterogeneous infrastructures. More requirements emerge for satellite-terrestrial integrated simulation, including fidelity, scalability, extensibility, agility, and real-time. However, there is a lack of a state-of-the-art review for relevant simulators. To the best of our knowledge, this paper is the most comprehensive and latest survey that covers network simulators for satellite-terrestrial integrated networks, with all or partial simulation functionalities for satellite orbit simulation, physical layer modeling, and network protocols and algorithms. Compared with existing surveys, this survey contributes from three aspects: (1) an up-to-date collection and a comprehensive taxonomy of simulation tools in the past decade; (2) a summary of the main requirements and challenges; and (3) an inspiring summary for new research opportunities and publicly available simulation tools for follow-up research.

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