煤炭企业多媒体综合业务数字网络服务质量模型  

QoS Model of Multimedia Integrated Services Digital Network in Coal Mine

作　　者：尹洪胜[1] 刘振[1] 钱建生[1] 张凯[1] 武健[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《中国矿业大学学报》2010年第1期109-115,共7页Journal of China University of Mining & Technology

基　　金：国家自然科学基金重点项目(70533050;50534050);国家火炬计划项目(2005EB040529)

摘　　要：为提高煤炭企业多媒体综合业务数字网络的服务质量(QoS),针对煤炭网络及其业务特点,提出煤矿企业QoS层次网络结构和网关节点模型;借鉴区分服务DiffServ思想,利用每跳行为PHB(per hop behavior)分类与标记煤矿网络业务,提出了适用于煤矿的具有区分服务能力的队列分组丢弃算法和队列分组调度算法.结果表明:实施该服务质量模型,即使多业务大数据量传输时,与煤矿安全生产密切相关的业务均能得到预定带宽,分组平均延时稳定地维持在40.4～41.2ms之间,延时抖动小于0.46ms,分组丢失率为零;而拾荒业务只能占有剩余的带宽,分组平均延时在42～56ms之间变化,业务抖动在1.7～3.6ms之间变化,分组丢失率高达47.6%.To improve the quality of service （QoS） of the multimedia integrated services digital network （ISDN） of the coalmine enterprises, the hierarchical structure of QoS network and the model of the gateway node were proposed based on the characters of the coalmine network. Using approach of the DiffServ, the services of the coalmine network were classified and marked by per hop behavior （PHB）, and the discard and schedule algorithm of queue packet were proposed to differentiate the services. The results show that the scheduled bandwidth can be obtained by the services closely related to the coalmine safety production, even facing multi-kind services and huge data amount. The average packet delay was steadily kept at 40.4-41.2 ms, the delay jitter was less than 0.46 ms, and the packet loss rate was zero. The remaining bandwidth can be obtained by scavenger services. The average packet delay differed from 42 ms to 56 ms, the delay jitter varied at 1.7-3.6 ms, and the packet loss rate reached 47.6%.

关 键 词：煤矿 层次网络结构 综合业务 服务质量 区分服务 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]