Collaborative Resource Orchestration for On-Orbit Edge Computing in 5G SAGIN.

On-orbit edge computing is an important component of the space-air-ground integration network (SAGIN) in the development process of 6G mobile communications. However, it is challenging to explore the collaborative management and scheduling of computing resources under large-scale satellite networks. In this paper, we consider network function virtualization (NFV) and propose a satellites cooperative resource orchestration strategy (SCROS), for low earth orbit (LEO) satellites to assist ground devices in computing. We refine the latency of each satellite involved in the collaborative computation to different time phases to investigate the task computation offloading using inter-satellite links (ISLs). The goals are minimize the total delay of multiple satellites and maximize the overall optimization benefit. Numerical results show that our proposed method has higher resource utilization and lower latency for solving the cooperative satellite in-orbit computation problem compared to others approaches.