Design Of Architecture And Study Of Control Plane Technology For Space Optical Network

The space information network is a novel network system deployed on the space platform, which can real-timely acquire, transfer and process the space information to provide significant communication services for navigation positioning and science exploration. However, there are many problems in the space network, such as limited resource, long delay and easy interruption, which are different from land optical communication network. Therefore, it is necessary to explore the architecture design and management-control mechanism according to the features and requirements of the space optical network. In this paper, the architecture design and control mechanism are intensively researched. The main works are as follows.(1) The architecture of Software Defined Space Optical Network (SDSON) based on cloud platform is designed through introducing cloud services and Software Defined Network (SDN) into the space optical network. SDSON based on cloud platform incorporating centralized and distributed management-control mechanism is a multi-layer and multi-domain architecture with powerful storage, computing and flexible controllability. Furthermore, the OpenFlow-enabled optical node and orchestrator are designed while the functions of the OpenFlow controllers are expanded. Finally, the experimental platform is built. On the experimental platform, the functions of components above are experimentally verified while the feasibility and effectiveness of the new architecture is experimentally validated.(2) The unreliable service and reliable service communication models are proposed and experimentally demonstrated. The two communication models offering different benefits, can be selected in line with the contents and attributes of the services or employed in the time-sharing way according to the space environment.(3) The WFMI routing algorithm and wavelength assignment algorithm based on vertex coloring are presented applied to the large-scale and complex space optical network. The WFMI routing algorithm can ensure the transmission performance, disperse the traffic request, balance the network resource and decrease the congestion ratio. The wavelength assignment algorithm based on vertex coloring can lessen the storage space and enhance the resource utilizing rate.