基于标识支持区分QoS的CICQ调度机制  

Differentiated QoS Supporting CICQ Scheduling Mechanism Based on Identifier

作　　者：李秀芹[1,2] 兰巨龙[2] 杨喜亮[1] 伊鹏[2] 

机构地区：[1]华北水利水电学院软件学院,郑州450045 [2]国家数字交换系统工程技术研究中心,郑州450002

出　　处：《北京工业大学学报》2012年第5期755-761,共7页Journal of Beijing University of Technology

基　　金：国家'九七三'计划资助项目(2007CB307102);河南省科技攻关计划资助项目(092102210059)

摘　　要：为了在高速环境下对不同业务提供更好的区分服务质量QoS(quality of service)保障,将标识的概念引入交换结构,提出一种基于标识支持区分QoS的CICQ(combined input and cross-point queued)调度机制.该机制采用基于标识和预约带宽约束的流控机制,以业务类为单位管理网络数据流,保证了交换对高层不同业务类的有效支持,理论分析和仿真实验一致.这表明该机制具有良好的时延性能,在过载情况下根据预定带宽分配输出链路带宽,保持了各业务类的相对公平性.To provide a better differentiated quality of service（QoS） for various traffics in the high speed environment,the concept of identifier to the switch fabric is introduced,and a novel CICQ（combined input and cross-point queued） scheduling mechanism for differentiated QoS based on identifier is proposed.The flow control mechanism based on the identifier and reservation bandwidth constraints is used to manage the network data flow in denomination of traffic classes,which ensures the switch to provide effectively support different high-level traffic classes.Theoretical analysis and simulation results are consistent.The mechanism has a good delay performance and can allocate the bandwidth of output links according to the reservation bandwidth,which maintains the relative fairness for each traffic class.

关 键 词：标识 调度算法 服务质量(QoS) 联合输入交叉节点排队(CICQ) 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN256[自动化与计算机技术—计算机科学与技术]