基于改进SA-NSGAⅡ的多波束卫星动态资源分配方法  

Multi-beam satellite dynamic resource allocation method based onimproved SA-NSGAⅡ

作　　者：饶悦 杨健[2,3] 孙国敏 张伟 邵怀宗 林静然 RAO Yue;YANG Jian;SUN Guomin;ZHANG Wei;SHAO Huaizong;LIN Jingran(School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Laboratory of Electromagnetic Space Cognition and Intelligent Control Technology,Beijing 100089,China;Key Laboratory of Science and Technology on Electronic Information Control,Chengdu 610036,China)

机构地区：[1]电子科技大学信息与通信工程学院,四川成都611731 [2]北京理工大学网络空间安全学院,北京100081 [3]电磁空间认知与智能控制技术实验室,北京100089 [4]电子信息控制重点实验室,四川成都610036

出　　处：《系统工程与电子技术》2024年第12期4222-4230,共9页Systems Engineering and Electronics

基　　金：国家自然科学基金(U20B2070)资助课题。

摘　　要：多波束卫星作为地球静止轨道卫星移动通信的重要手段,能够实现远距离数据传输与通信交流。为了满足多样化的用户需求,需要考虑不同用户间的通信速率、频谱利用效率以及信道缓存等问题,这给卫星通信的动态资源分配带来巨大的挑战。就多波束卫星缓存限制下的用户满意度和频谱效率优化问题,提出一种基于可行域边界投影的模拟退火带精英策略的非支配排序遗传算法Ⅱ(simulated annealing-elitist non-dominated sorting genetic algorithm,SA-NSGAⅡ)。所提算法采用投影法将可行域外的迭代点投影到可行边界,实现历史优化信息的有效保留,进而提高非支配排序遗传算法(non-dominated sorting genetic algorithm,NSGAⅡ)的优化效率。仿真实验结果表明,所提算法不仅能够将用户缓存控制在规定门限内,还能有效提高用户满意度和优化频谱效率。As an important means of mobile communication of geostationary orbit satellites,multi-beam satellite can realize long-distance data transmission and telecommunication.In order to meet the diverse needs of users,it is necessary to consider the communication rates among different users,spectrum utilization efficiency and channel caching,which brings great challenges to the dynamic resource allocation of satellite communication.A simulated annealing-elitist non-dominated sorting genetic algorithm(SA-NSGAⅡ)based on feasible region boundary projection is proposed for the optimization of user satisfaction and spectrum efficiency with the limitation of multi-beam satellite cache.The proposed algorithm uses projection method to project the iteration points outside the feasible region to the feasible boundary to realize the effective retention of historical optimization information and to improve the optimization efficiency of non-dominated sorting genetic algorithm(NSGAⅡ).The simulation experimental results show that the proposed algorithm can not only control the user cache within the specified threshold,but also effectively improve the user satisfaction and optimize the spectrum efficiency.

关 键 词：多波束卫星通信 用户满意度 频谱效率 信道缓存 模拟退火带精英策略的非支配排序遗传算法 

分 类 号：TN911.7[电子电信—通信与信息系统]