A Scheme for Software Defined ORS Satellite Networking

Space-ground integrative network is an important development direction for sustainable communication networks especially to the information system which contains the data acquiring in multiple ways including space and ground, data processing by amalgamation and so on. As a new satellite technology, ORS (Operationally Responsive Space) will provide a fast and flexible solution for emergency response such as aim tracking, dense earth-observation, communication relay and so on, which can be fast deployed or awoken and play an important role on-demand. However, most existing satellite communication follows a designated and static scheme that can´t meet the dynamic networking requirements of ORS. In order to build a reliable ORS satellite network whose communication parameters can be reconfigured such as task region, work time, cooperation satellites, QoS and so on, a new satellite network architecture should be studied. Firstly, based on software defined network (SDN) technology, a networking scheme for ORS satellites was proposed in literally, named SDN-Sat Arc, which adopted a light-structure. It can also receive and process the instructions of ground center. Then ORS satellite network model was designed according to network meta-model defined by us to allow describing current ORS satellite states, and compute the necessary multi-hop route in the future.