Architecture of the OEC systems. (IMAGE)
Caption
(1) ''GEO satellite constellation'' plays the role of ''Space-based Cloud,'' offering functionalities such as resource scheduling, network management, and maintaining orbit information, but only managing a limited range of satellite clusters and networking them. LEO satellites can offload computing tasks to these GEO satellites. (2) ''LEO satellite constellation'' is the ''Edge'', which can offer edge computing service to ``End''. They periodically report their status, e.g., available resources, health condition, and network to the ''Cloud'' for task scheduling. (3) GS serve as ''Ground-based Clouds'' and have abundant computational and storage resources. They routinely synchronize information with GEO satellites to ascertain the global status of all satellites. (4) The user end, such as airplane, UAV, ship, and mobile phone, which is the originator of the service. Computational tasks and data are generated here.
Credit
Chinese Journal of Aeronautics
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