Dynamically Adaptive Cooperation Transmission among Satellite-Ground Integrated Networks

It is a desirable goal to fuse satellite and ground integrated networks (SGINs) to improve the resource utilization efficiency. However, existing work did not consider how to integrate them as a whole network because they lack of function-configurable network management and efficient cooperation among satellite and ground networks. In this paper, we firstly propose a SDN-based network architecture, where resources in SGINs are managed and scheduled in the layered and on-demand way. Then, we formulate the dynamical cooperation transmission in SGINs as an optimization problem and prove its NP hardness. Finally, to realize deeper-level resource fusion, we propose an efficient transmission approach DEEPER (aDaptive satEllitE-ground cooPerativE tRasmission) based on dynamical cooperation among satellite and ground networks, which is network-aware and workload-driven. Comprehensive experiment results demonstrate that our approach outperforms related schemes in terms of network throughput, end-to-end delay, transmission quality and load balancing.