# SateLight: A Satellite Application Update Framework for Satellite Computing

**Authors:** Jinfeng Wen, Jianshu Zhao, Zixi Zhu, Xiaomin Zhang, Qi Liang, Ao Zhou, Shangguang Wang  
**arXiv:** [2509.12809](https://arxiv.org/abs/2509.12809)  
**Date:** 2025-09-16  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/2509.12809v1/

## Key points

- Satellite computing aims to reduce dependence on ground-based systems and enhance responsiveness
- Challenges in updating application software in satellite environments include application diversity, constrained bandwidth, and harsh space conditions
- The SateLight framework is tailored for satellite computing, leveraging containerization technology for efficient deployment and maintenance
- Key capabilities of SateLight include a content-aware differential strategy, fine-grained onboard update design, and a fault-tolerant recovery mechanism
- Experimental results show significant reduction in transmission latency and 100% update correctness across all evaluated applications
- A real-world case study validates the practicality and effectiveness of the SateLight framework

## Summary

In the realm of satellite computing, where satellites are empowered to conduct onboard processing tasks known as satellite applications, reducing dependence on ground-based systems and enhancing responsiveness is a primary goal. However, updating application software in this environment presents significant challenges due to factors such as application diversity, constrained ground-to-satellite bandwidth, and the harsh conditions of outer space. Traditional software update methods designed for terrestrial systems fall short in addressing these constraints as they assume ample computational resources and stable connectivity. To bridge this gap, the <b>SateLight framework</b> emerges as a practical and effective solution tailored specifically for <b>satellite computing.</b> Leveraging containerization technology to encapsulate a variety of heterogeneous applications, SateLight enables <b>efficient deployment</b> and maintenance processes. The framework integrates three key capabilities: 
1) A content-aware differential strategy that minimizes communication data volume,
2) A fine-grained onboard update design that reconstructs target applications,
3) A layer-based <b>fault-tolerant recovery mechanism</b> ensuring reliability in failure-prone space conditions. Experimental results conducted on a satellite simulation environment featuring 10 representative satellite applications showcase the efficacy of SateLight. It demonstrates a remarkable reduction in transmission latency by up to 91.18% (with an average improvement of 56.54%) compared to existing baseline solutions while consistently maintaining 100% <b>update correctness</b> across all evaluated applications. Furthermore, a real-world case study involving an in-orbit satellite validates the practicality and effectiveness of the proposed approach. Authored by Jinfeng Wen, Jianshu Zhao, Zixi Zhu, Xiaomin Zhang, Qi Liang, Ao Zhou, and Shangguang Wang; the paper titled "SateLight: A Satellite Application Update Framework for Satellite Computing" has been accepted for publication at ASE 2025. This innovative framework not only addresses critical challenges in updating satellite applications but also paves the way for enhanced efficiency and reliability in satellite computing environments.