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基于串联排队网络理论,建立了端到端无线、有线级联通信网络串联排队分析模型.针对时延不敏感的海量机器对机器(M2M)小数据业务,提出无线链路上的重试排队分析模型,研究延时服务机制.用带有随机早期检测(RED)机制有限缓存的离散时间串联队列建模IP承载网络,模拟了多节点联合拥塞控制的通信场景.在概率生成函数域,推导了带有重试机制、具有异构业务到达排队系统的离去过程,并将其拟合为下一个节点的到达过程.研究结果表明,重试队列的引入,有效提高了无线链路的吞吐量,减小了阻塞率,提高了有线链路的到达率.给出了重试队列参数设置对无线链路性能的影响.
Based on the theory of tandem queuing network, a tandem queuing analysis model of end-to-end wireless and wired cascaded communication networks is established.For the time-delay insensitive Massive Machine-to-Machine (M2M) small data service, Model is proposed to study the delay service mechanism.The IP bearer network is modeled by a discrete-time tandem queue with limited caching of random early detection (RED) mechanism to simulate the communication scenario of multi-node joint congestion control.In the probability generation function domain, With the retry mechanism, it has the arrival process of the queuing system with heterogeneous services and fits it into the arrival process of the next node.The research results show that the introduction of retry queue effectively improves the throughput of the wireless link , Reducing the blocking rate and improving the arrival rate of the wired link.The effect of retry queue parameter setting on the performance of the wireless link is given.