A Study for Inter-Satellite Cooperative Computation Offloading in LEO Satellite Networks  

作　　者：Gang Yuanshuo Zhang Yuexia Wu Peng Zheng Hui Fan Guangteng 

机构地区：[1]Key Laboratory of Modern Measurement and Control Technology,Ministry of Education,Beijing Information Science and Technology University,Beijing 102206,China 2 [2]National Innovation Institute of Defense Technology,Academy of Military Science,Beijing 100071,China

出　　处：《China Communications》2025年第2期12-25,共14页中国通信(英文版)

基　　金：supported in part by Sub Project of National Key Research and Development plan in 2020 NO.2020YFC1511704;Beijing Information Science and Technology University NO.2020KYNH212,NO.2021CGZH302;Beijing Science and Technology Project(Grant No.Z211100004421009);in part by the National Natural Science Foundation of China(Grant No.62301058).

摘　　要：Low Earth orbit(LEO)satellite networks have the advantages of low transmission delay and low deployment cost,playing an important role in providing reliable services to ground users.This paper studies an efficient inter-satellite cooperative computation offloading(ICCO)algorithm for LEO satellite networks.Specifically,an ICCO system model is constructed,which considers using neighboring satellites in the LEO satellite networks to collaboratively process tasks generated by ground user terminals,effectively improving resource utilization efficiency.Additionally,the optimization objective of minimizing the system task computation offloading delay and energy consumption is established,which is decoupled into two sub-problems.In terms of computational resource allocation,the convexity of the problem is proved through theoretical derivation,and the Lagrange multiplier method is used to obtain the optimal solution of computational resources.To deal with the task offloading decision,a dynamic sticky binary particle swarm optimization algorithm is designed to obtain the offloading decision by iteration.Simulation results show that the ICCO algorithm can effectively reduce the delay and energy consumption.

关 键 词：computation offloading inter-satellite co-operation LEO satellite networks 

分 类 号：TN927.2[电子电信—通信与信息系统]