一种星地网络计算卸载和资源分配方法

By constructing a PAMDP model with parameterized actions and an HPPO reinforcement learning method with a hybrid action space, the computation offloading and resource allocation of the satellite-ground network are optimized. This solves the problems of computation offloading and resource allocation in the scenarios of LEO-GEO joint use and LEO inter-satellite cooperation, and achieves reduced system latency and high efficiency in resource allocation.

CN117560055BActive Publication Date: 2026-07-17XIAN INSTITUE OF SPACE RADIO TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN INSTITUE OF SPACE RADIO TECH
Filing Date
2023-10-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for computational offloading and resource allocation in satellite edge networks have failed to effectively address the challenges of computational offloading and resource allocation in dynamic and complex multi-layer satellite networks. In particular, the continuity and discreteness of access satellite handover and resource allocation have not been adequately considered in scenarios involving joint use of LEO-GEO and inter-satellite cooperation of LEO satellites.

Method used

We construct a PAMDP model with parameterized actions, combine it with the HPPO reinforcement learning method in a hybrid action space, optimize the computational offloading and resource allocation of the satellite-ground network, optimize the system latency through a Markov decision process model, and comprehensively consider satellite coverage model, wireless channel model and inter-satellite cooperation.

Benefits of technology

It effectively reduces system latency and improves the efficiency of computation offloading and resource allocation, especially in access satellite switching and resource allocation in LEO-GEO joint use and LEO inter-satellite collaboration scenarios, achieving more efficient resource sharing and service collaboration.

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Abstract

本发明公开提供了一种星地网络计算卸载和资源分配方法,首先,对多层卫星边缘网络场景进行定义,包括对LEO卫星集合、物联网终端设备集合、GEO卫星和地面信关站的定义。其次,对LEO卫星覆盖模型进行建立,得到LEO卫星对物联网终端设备的覆盖时间。再次,建立无线信道模型,得到三条通信链路下的数据传输速率。在此基础上,结合切换接入星策略和LEO星间协作得到三种卸载方式下的时延模型。推导卸载决策和资源分配量对应的约束条件,并根据约束条件对优化问题进行建模。随后,针对离散‑连续混合的动作空间,构造参数化动作空间的马尔可夫决策过程PAMDP。
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