학술논문
基于延迟接受的低轨星座用户接入策略 / Delayed Acceptance-based User Access Strategy for Low Earth Orbit Satellite Constellations
Document Type
Academic Journal
Author
李学富; 耿座学; 王英伍; 王培继; 赵思卫; 朱宇; 杨明; 魏小兰; 刘靖; LI Xuefu; GENG Zuoxue; WANG Yingwu; WANG Peiji; ZHAO Siwei; ZHU Yu; YANG Ming; WEI Xiaolan; LIU Jing
Source
航天器工程 / Spacecraft Engineering. 33(1):26-35
Subject
Language
Chinese
ISSN
1673-8748
Abstract
针对低轨星座用户接入问题,设计了一种基于延迟接受的用户接入策略,综合考虑了多属性偏好序信息.对星地融合通讯系统进行建模,并利用连接关系矩阵描述用户与基站之间的覆盖关系.同时,根据卫星中继基站位置和低轨星座构型计算出卫星中继基站与卫星之间的连接关系矩阵,并将频谱资源划分为信道单元.根据建立的模型,综合考虑信道资源分配和干扰管理,提出多属性评价的偏好序信息,包括用户与小区回程链路的信道增益、干扰增益、小区回程容量和小区负载水平等.经过理论分析证明了所提出的匹配策略的稳定性和帕累托最优性.仿真结果表明所提出的用户接入策略(UADA)算法性能明显优于其他算法.
In response to the user access challenges in low earth orbit(LEO)constellations,a de-layed acceptance-based user access strategy is designed by considering a comprehensive integra-tion of multi-attribute preference order information.Construct the model of the satellite-ground fusion communication system and describe the coverage relationship between users and base sta-tions by connection matrix.Simultaneously,the connection relationship matrix between satellite relay stations and satellites is calculated by considering the positions of satellite relay stations and the LEO constellation configuration.Furthermore,the spectrum resources are divided into chan-nel units.Based on the established model,a user access strategy research method,utilizing combi-natorial optimization,is employed to comprehensively consider channel resource allocation and in-terference management methods.Multiple attributes for preference ordering are proposed,inclu-ding channel gain,interference gain,backhaul capacity,and cell load level between users and cell backhaul links.Theoretical analysis demonstrates the stability and Pareto optimality of the pro-posed matching strategy.The simulation results show that the performance of the proposed UA-DA algorithm is significantly better than other algorithms.
In response to the user access challenges in low earth orbit(LEO)constellations,a de-layed acceptance-based user access strategy is designed by considering a comprehensive integra-tion of multi-attribute preference order information.Construct the model of the satellite-ground fusion communication system and describe the coverage relationship between users and base sta-tions by connection matrix.Simultaneously,the connection relationship matrix between satellite relay stations and satellites is calculated by considering the positions of satellite relay stations and the LEO constellation configuration.Furthermore,the spectrum resources are divided into chan-nel units.Based on the established model,a user access strategy research method,utilizing combi-natorial optimization,is employed to comprehensively consider channel resource allocation and in-terference management methods.Multiple attributes for preference ordering are proposed,inclu-ding channel gain,interference gain,backhaul capacity,and cell load level between users and cell backhaul links.Theoretical analysis demonstrates the stability and Pareto optimality of the pro-posed matching strategy.The simulation results show that the performance of the proposed UA-DA algorithm is significantly better than other algorithms.