基于重复码不同质重传的URLLC最小化带宽方法  

URLLC mode bandwidth minimization method based on HARQ

作　　者：曹丽媛 张治中 冯姣 程方 CAO Li-yuan;ZHANG Zhi-zhong;FENG Jiao;CHENG Fang(School of Electronics and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《计算机工程与设计》2025年第1期74-80,共7页Computer Engineering and Design

基　　金：国家重点研发计划基金项目(2022YFB2902100);工信部行业专项基金项目(TC210H02P);国家自然科学基金项目(61501245、62171229)。

摘　　要：为实现5G超可靠低延迟通信(URLLC)应用场景在高服务质量(QoS)要求下的最小带宽资源分配问题,提出一种基于混合自动重传请求(HARQ)的重复码不同质传输的带宽最小化方案HTRCBM-HARQ。通过提出一种重传方式,即重复码不同质传输的HARQ,提高可靠性;通过建立时延与可靠性分析的框架,导出系统所需最小带宽公式。仿真结果表明,该算法有效提高了有限带宽资源的利用率,与现有算法对比可以节省10%~30%的带宽资源。To achieve the minimum bandwidth resource allocation problem in ultra reliable low latency communication(URLLC)application scenarios under high quality of service(QoS)requirements,a bandwidth minimization scheme based on hybrid automatic retransmission request(HARQ)for heterogeneous transmission of repetitive codes,HTRCBM-HARQ,was proposed.The reliability was improved by proposing a retransmission method HARQ for repeated code heterogeneous transmission.By establishing a framework for analyzing latency and reliability,the formula for the minimum bandwidth required by the system was derived.Simulation results show that the algorithm effectively improves the utilization of limited bandwidth resources,and it can save 10%to 30%of bandwidth resources compared to existing algorithms.

关 键 词：5G 超可靠低时延通信 服务质量 混合自动重传请求 带宽资源 可靠性 时延 

分 类 号：TN929.5[电子电信—通信与信息系统]