This article proposes a software defined spaceair-ground integrated network architecture for supporting diverse vehicular services in a seamless, efficient, and cost-effective manner. First, the motivations and challenges for integration of space-air-ground networks are reviewed. Second, a software defined network architecture with a layered structure is presented. To protect the legacy services in the satellite, aerial, and terrestrial segments, resources in each segment are sliced through network slicing to achieve service isolation. Then available resources are put into a common and dynamic space-air-ground resource pool, which is managed by hierarchical controllers to accommodate vehicular services. Finally, a case study is carried out, followed by discussion on some open research topics. softwAre defIned VehIculAr networks: ArchItectures, AlgorIthms, And ApplIcAtIons The authors propose a software defined spaceair-ground integrated network architecture for supporting diverse vehicular services in a seamless, efficient, and cost-effective manner. The motivations and challenges for the integration of space-air-ground networks are reviewed, and then a software defined network architecture with a layered structure is presented. Ning Zhang is with the University of Toronto; he was with the Multimedia Communications Laboratory, Simon Fraser University. His research interests span software defined networking, network virtualization, wireless communications, and machine learning. He currently serves as a reviewer for IEEE Communications Letters, IEEE Transactions on Vehicular Technology, and other journals and conferences. The new network operation model can pave the road for resource sharing and collaboration among different segments. To accelerate the pace of SSAGV network development, extensive research efforts are required in the outlined research directions.
Based on SDN, Zhang et al. REF have proposed an SSAGV network architecture to exploit the advantages of space, air, and ground segments, to support diverse vehicular services in various scenarios efficiently and cost-effectively.
Software Defined Space-Air-Ground Integrated Vehicular Networks: Challenges and Solutions
IEEE Communications Magazine
IEEE Communications Magazine
Computer Science