Software Defined Space-Air-Ground Integrated Vehicular Networks: Challenges and Solutions
Software Defined Space-Air-Ground Integrated Vehicular Networks: Challenges and Solutions
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软件定义的天地一体化车载网络：挑战与解决方案
DOI：
10.1109/mcom.2017.1601156
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发表时间：
2017-07-01
影响因子：
11.2
通讯作者：
Shen, Xuemin (Sherman)
中科院分区：
文献类型：
--
作者：
Zhang, Ning;Zhang, Shan;Shen, Xuemin (Sherman)
本文提出了一种软件定义的空天地一体化网络架构，以便以无缝、高效且经济高效的方式支持多种车载服务。首先，综述了空天地网络一体化的动机和挑战。其次，提出了一种具有分层结构的软件定义网络架构。为了保护卫星、航空和地面部分的既有服务，通过网络切片对每个部分的资源进行切片，以实现服务隔离。然后将可用资源放入一个通用的动态空天地资源池中，该资源池由分层控制器进行管理，以适应车载服务。最后，进行了一个案例研究，并对一些开放的研究课题进行了讨论。
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.