摘要
基于无线通信网的运行机制和实时性、非实时性混合业务对无线通信网络的不同服务质量(QoS)要求,设计了有限缓存下实时性业务优先接入控制策略,并建立了无线通信网络在有限缓存下混合业务带有优先接入控制的多服务台离散时间排队模型Geom_(1)±Geom_(2)/Geom_(1),Geom_(2)/s,s(PP)/n+s,s.精确划分了系统的状态组成,分析了系统性能和状态转移概率,获得了系统的稳态分布、平均队长、损失率、以及信道的平均利用率.最后,对所建模型进行数值模拟,得到各业务到达率、服务率、信道个数、缓冲器容量与各业务损失率的关系.针对网络拥塞控制,本文提出通过增加信道个数、提高优先级业务的服务率能有效地降低两类业务的损失率.
Based on the operating mechanism of network,and the different QoS requirements of real-time and nonreal-time service for wireless communication network,an admission control scheme with priority for real-time service under finite buffer was designed,and a multi-server discrete-time queuing model with priority under finite buffer Geom_(1)±Geom_(2)/Geom_(1),Geom_(2)/s,s(PP)/n+s,s was established for multi-service admission control.The state composition of the system was accurately divided,and system performance and state transition probability were analyzed,then the steady-state distribution,average queue length,loss rate and average channel utilization were obtained.Finally,numerical simulation was carried out to analyze the relationship between arrival rate,service rate,channel number,buffer capacity and loss rate.For network congestion control,this paper proposes that the loss rate of the two types of service can be effectively reduced by increasing the number of channels and improving the service rate of the traffic with priority.
作者
黎锁平
徐倩毓
JAAFAR Gaber
LI Suo-ping;XU Qian-yu;JAAFAR Gaber(School of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China;School of Science,Lanzhou University of Technology,Lanzhou Gansu 730050,China;Universite de Technologie Belfort-Montbeliard,Belfort 90010,France)
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
2022年第6期1011-1019,共9页
Control Theory & Applications
基金
国家自然科学基金项目(61663024)
欧盟“Erasmus+计划”项目(573879-EPP-1-2016-1-FR-EPPKA2-CBHE-JP)
兰州理工大学红柳一流学科建设基金项目资助.
