Software Defined Space-Terrestrial Integrated Networks: Architecture, Challenges, and Solutions

Bi, Yuanguo; Han, Guangjie; Xu, Shuhang; Wang, Xingwei; Lin, Chuan; Yu, Zhaojie; Sun, Peiyao

doi:10.1109/mnet.2018.1800193

Cited by 90 publications

(36 citation statements)

References 15 publications

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“…In [65], a new perspective on integrated systems has been presented by discussing Software Defined Space-Terrestrial Integrated Networks based on Software Defined Networking (SDN) [66], which separates the control plane from the data plane. In [67], the integration of non-terrestrial and terrestrial networks has been simplified by introducing a new architecture that combines SDN and Network Function Virtualization (NFV) [68], which implements specific hardware functionalities via software.…”

Section: Non-terrestrial Network In 5g Systemsmentioning

confidence: 99%

Non-Terrestrial Networks in 5G & Beyond: A Survey

et al. 2020

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Fifth-generation (5G) telecommunication systems are expected to meet the world market demands of accessing and delivering services anywhere and anytime. The Non-Terrestrial Network (NTN) systems are able to satisfy the requests of anywhere and anytime connections by offering wide-area coverage and ensuring service availability, continuity, and scalability. In this work, we review the 3GPP NTN features and their potential for satisfying the user expectations in 5G & beyond networks. The state of the art, current 3GPP research activities, and open issues are summarized to highlight the importance of NTN over the wireless communication landscape. Future research directions are also identified to assess the role of NTN in 5G and beyond systems.

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Section: Non-terrestrial Network In 5g Systemsmentioning

confidence: 99%

Non-Terrestrial Networks in 5G & Beyond: A Survey

et al. 2020

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“…Bi et al [236] proposed an SDN-enabled for Space and Terrestrial Integrated Network (SD-STIN). The goal of SD-STIN is to support global seamless communications.…”

Section: F Sdn-based Satellite Communicationsmentioning

confidence: 99%

Softwarization of UAV Networks: A Survey of Applications and Future Trends

et al. 2020

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Unmanned Aerial Vehicles (UAVs) have become increasingly important in assisting 5G and beyond 5G (B5G) mobile networks. Indeed, UAVs have all the potentials to both satisfy the ever-increasing mobile data demands of such mobile networks and provide ubiquitous connectivity to different kinds of wireless devices. However, the UAV assistance paradigm faces a set of crucial issues and challenges. For example, the network management of current UAV-assisted systems is time consuming, complicated, and carried out manually, thus causing a multitude of interoperability issues. To efficiently address all these issues, Software-Defined Network (SDN) and Network Function Virtualization (NFV) are two promising technologies to efficiently manage and improve the UAV assistance for the next generation of mobile networks. In the literature, no clear guidelines are describing the different use cases of SDN and NFV in the context of UAV assistance to terrestrial networks, including mobile networks. Motivated by this fact, in this survey, we guide the reader through a comprehensive discussion of the main characteristics of SDN and NFV technologies. Moreover, we provide a thorough analysis of the different classifications, use cases, and challenges related to UAV-assisted systems. We then discuss SDN/NFV-enabled UAV-assisted systems, along with several case studies and issues, such as the involvement of UAVs in cellular communications, monitoring, and routing, to name a few. We furthermore present a set of open research challenges, high-level insights, and future research directions related to UAV-assisted systems.

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“…ComR t ð Þ upperE i r , do: 7. Calculate according to equation (10) to get c 1j t ð Þ 8. end while all points are calculated 9. while StoR t ð Þ E i r .StoR t ð Þ upperE i r , do: 10. Calculate according to equation (12) to get c 2j t ð Þ 11. end while all points are calculated 12.…”

Section: Simulationmentioning

confidence: 99%

“…Cross-regional communication is an advanced concept, and it still faces many challenges, such as complex candidate paths and unreasonable resource allocation. 10 The first challenge is the path assignment problem. Cross-regional communication requires the consideration of all network nodes in the space, sky, ground, and ocean, meaning that the number of nodes is extremely large and the factors affecting the link reliability are complex.…”

Section: Introductionmentioning

confidence: 99%

BeiDou satellites cross-regional communication path assignment model and resource management

Liu

Zhang

2021

International Journal of Distributed Sensor Networks

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Time division inter-satellite communication and ranging link assignment of BeiDou satellites have made important progress; however, there is still the unsolved issue of integrated communication between ground gateway, aircraft, or even ship, and the BeiDou satellites. Therefore, in this study, we develop a path assignment model based on the idea of clustering and Markov chain. The optimal path is determined by the objective function based on the maximum transition probability. The transition probability takes into account the communication environment, congestion status, aircraft mobility, and reduces the complexity of path assignment by hiding the topology in the region. At the same time, due to the limited resources of onboard computing, storage and bandwidth, we also design a resource management strategy based on task urgency, aimed at minimizing the unreasonable allocation index, to enable the readjustment of link application resources. Finally, the performance of the model and the strategy in average link handover times, link reliability, resource allocation fairness, and network quality of service is determined by simulation.

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Software Defined Space-Terrestrial Integrated Networks: Architecture, Challenges, and Solutions

Cited by 90 publications

References 15 publications

Non-Terrestrial Networks in 5G & Beyond: A Survey

Non-Terrestrial Networks in 5G & Beyond: A Survey

Softwarization of UAV Networks: A Survey of Applications and Future Trends

BeiDou satellites cross-regional communication path assignment model and resource management

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