摘要
针对当前只考虑服务器的状态更新系统无法评估远距离通信的信息年龄(AoI)问题,设计了一种中继辅助的多源状态更新系统。运用随机混合系统(SHS)理论评估了所设计模型在非抢占策略下的平均AoI,提出了一种离散状态的合并思想,简化了计算的复杂性。仿真结果表明平均AoI随着源1的生成速率和服务时间的增大而减小,与已有研究中平均AoI的变化趋势一致,验证了所提出的将离散状态进行合并的思想在运用SHS理论评估AoI的过程中是可行的。
In response to the inability of current server-only status update systems to evaluate the age of information(AoI)for longdistance communication,an relay-assisted multi-source status update system is designed.This system utilizes the theory of stochastic hybrid systems(SHS)to assess the average AoI under a non-preemptive policy.Additionally,a concept of merging discrete states is proposed to simplify computational complexity.Simulation results indicate that the average AoI decreases as the generation rate and service time of Source 1 increase,and consistents with the trends observed in existing research,which verifies the feasibility of the proposed idea of merging discrete states in applying SHS theory to evaluate AoI.
作者
张亮
贾向东
牛夏秧
薛凯来
Zhang Liang;Jia Xiangdong;Niu Xiayang;Xue Kailai(Northwest Normal University,Lanzhou 730070,China)
出处
《邮电设计技术》
2025年第7期59-64,共6页
Designing Techniques of Posts and Telecommunications
基金
国家自然科学基金(62261048)。
关键词
信息年龄
随机混合系统
多源排队模型
Age of information
Stochastic hybrid systems
Multi-source queueing model
