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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%.
In order to improve the quality of service (QoS) of multimedia integrated services digital network in coal enterprises, this paper puts forward the QoS network structure and gateway model of coal mine enterprises according to the characteristics of coal network and its business. Referring to DiffServ’s idea of differentiated services, This paper proposes a queue grouping algorithm and a queue grouping algorithm with differentiated services for coal mine.It shows that when this service quality model is implemented, Businesses that are closely related to work safety can obtain the scheduled bandwidth. The average delay of the packet is maintained at 40.4 ~ 41.2ms steadily, the delay jitter is less than 0.46ms, and the packet loss rate is zero. However, the scavenged traffic can only occupy the remaining bandwidth, The average packet delay varies from 42 to 56 ms. The service jitter varies from 1.7 to 3.6 ms, and the packet loss rate is as high as 47.6%.