Conclusion

In recent years, space edge computing (SEC) is becoming a new computation paradigm for future integrated space and terrestrial networks. In this paper, we present PHOENIX, an energy-efficient task scheduling framework for futuristic SEC networks. PHOENIX exploits a number of sunlit edges for onboard task processing. In particular, we propose a series of sunlight-aware scheduling algorithms to reduce battery energy consumption. We implement a PHOENIX prototype and conduct experiments on the SEC environment. Evaluations demonstrate that as compared to the state-of-the-art solutions, PHOENIX can reduce the DoD by up to 54.8% and prolong the battery lifetime to 2.9× while guaranteeing task deadline.

近年来，空间边缘计算（SEC）正逐渐成为未来天地一体化网络中的新型计算范式。本文提出 PHOENIX，一种面向未来 SEC 网络的节能型任务调度框架。PHOENIX 利用多个处于受光状态的边缘节点进行星上任务处理，特别地，我们设计了一系列感知阳光状态的调度算法，以降低电池能耗。我们实现了 PHOENIX 原型，并在 SEC 环境中开展了实验评估。结果表明，与最新方案相比，PHOENIX 可在满足任务时限的同时，将放电深度（DoD）最多降低 54.8%，并将电池寿命延长至 2.9 倍。