Research on heterogeneous task offloading methods based on CA3C in satellite-ground edge computing networks

Liu Zhiguo; Jin Xiaoyong; Wang Lin; Pan Chengsheng

doi:10.11959/j.issn.1000-0801.DXKX250545

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Research on heterogeneous task offloading methods based on CA3C in satellite-ground edge computing networks

Research and Development | 更新时间：2026-05-13

- Research on heterogeneous task offloading methods based on CA3C in satellite-ground edge computing networks
- Telecommunications Science Vol. 42, Issue 4, Pages: 101-116(2026)
- 作者机构：
  
  1.大连大学信息工程学院，辽宁大连 116622
  2.大连大学通信与网络重点实验室，辽宁大连 116622
  3.大连大学环境与化学工程学院，辽宁大连 116622
  4.南京信息工程大学电子与信息工程学院，江苏南京 210044
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61931004)
- DOI：10.11959/j.issn.1000-0801.DXKX250545
  CLC： TN927.2
- Received：10 September 2025，
  
  Revised：2025-12-29，
  
  Accepted：07 January 2026，
  
  Published：20 April 2026
- 稿件说明：
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刘治国,金晓勇,汪林等.星地边缘计算网络中基于 CA3C的异构任务卸载方法研究[J].电信科学,2026,42(04):101-116.

Liu Zhiguo,Jin Xiaoyong,Wang Lin,et al.Research on heterogeneous task offloading methods based on CA3C in satellite-ground edge computing networks[J].Telecommunications Science,2026,42(04):101-116.
刘治国,金晓勇,汪林等.星地边缘计算网络中基于 CA3C的异构任务卸载方法研究[J].电信科学,2026,42(04):101-116. DOI： 10.11959/j.issn.1000-0801.DXKX250545.

Liu Zhiguo,Jin Xiaoyong,Wang Lin,et al.Research on heterogeneous task offloading methods based on CA3C in satellite-ground edge computing networks[J].Telecommunications Science,2026,42(04):101-116. DOI： 10.11959/j.issn.1000-0801.DXKX250545.

摘要

卫星边缘计算弥补了地面网络覆盖面有限的缺点，能够为稀疏网络环境下的用户提供高质量服务。但卫星边缘服务器资源受限以及用户的差异需求为制定灵活有效的任务卸载方法带来了困难。针对异构任务卸载决策不合理导致的卸载时延过高与能耗过大的问题，融合软件定义网络（software defined network，SDN）的星地边缘计算网络（satellite-ground edge computing network，SGECN）架构的系统模型下，提出一种基于卷积异步优势Actor-Critic（convolutional asynchronous advantage Actor-Critic，CA3C）算法的异构任务卸载方法，引入动态权重分配机制，根据任务特征自适应地调整时延和能耗权重，并采用卷积神经网络改进了A3C（asynchronous advantage Actor-Critic）算法的网络结构，解决了异构任务多样化需求以及算法收敛速度慢的问题。仿真结果表明，CA3C在显著降低异构任务卸载时延与能耗方面具有优越性能。

Abstract

Satellite edge computing is proposed to make up for limited coverage of the terrestrial network，it can provide high-quality service for users in sparse network environment. However

limited resources of satellite edge servers and diverse demands of users make it difficult to formulate flexible and effective task offloading methods. Aiming at the problems of high offloading delays and excessive energy consumption caused by unreasonable heterogeneous task offloading strategy

a heterogeneous task offloading method based on the convolutional asynchronous advantage Actor-Critic (CA3C) algorithm was proposed based on the system model of satellite-ground edge computing network (SGECN) architecture combined with software defined network (SDN). Delay and energy consumption weights were adaptively adjusted according to task characteristics by introducing a dynamic weight distribution mechanism

and a convolutional neural network was used to improve the network structure of A3C

the problems of diverse demands of heterogeneous task and slow convergence speed of the algorithm were solved. Simulation results show that the CA3C method performs better in effectively reducing the offloading time delay and energy consumption of heterogeneous task.

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Keywords

references

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