机器类通信流量建模与过载控制  

Traffic modeling for machine type communication and its overload control

作　　者：简鑫[1] 曾孝平[1] 贾云健[1] 杨俊逸[1] 贺渊[1] 

机构地区：[1]重庆大学通信工程学院,重庆400030

出　　处：《通信学报》2013年第9期123-131,共9页Journal on Communications

基　　金：国家自然科学基金资助项目(61171089)~~

摘　　要：机器类通信(或MTC通信)定义为通过蜂窝网络进行数据传输的机器通信,作为未来泛在网络的重要组成部分,具有广阔的应用前景和市场潜力。为评估MTC接入时的网络性能,以3GPP参考流量模型和G/M/1队列模型的通解为基础,为MTC通信建立Beta/M/1队列模型;通过推导形状参数为任意正整数的Beta分布的概率生成函数的解析解,给出Beta/M/1模型性能评估的求解过程;利用数值分析,给出Beta/M/1模型的主要特征。为解决MTC接入时系统面临的过载问题,提出了3个解决办法,分别是:1)不同属性终端间聚类;2)改变MTC终端到达时间间隔分布;3)分段均匀随机退避算法。所提Beta/M/1模型及分段均匀随机退避算法可作为物联网/MTC通信/海量终端入网性能分析及过载控制的参考模型。Machine type communications （MTC）, defined as machine to machine communication over cellular mobile network, is an integral part of future ubiquitous network and has broad application prospects and market potentials. To carry out the performance analysis of network in context of MTC applications, a Beta/M/1 queue model was proposed for modeling the network with MTC applications and its full performance analysis were given out by deducing the analytical expression of Beta distribution＇s moment generation function, in which the shape parameters of Beta distribution are as-sumed to be integer. In addition, to handle the congestion caused bymass concurrent data and signaling transmission from many MTC devices, three overload control measures were also presented, that is： 1） inter-class grouping techniques; 2） re-shaping the inter-arrival time distribution of MTC devices; 3） segment-wise uniform back-off scheme. The Beta/M/1 model and segment-wise uniform back-off scheme proposed here can be used as a preliminary model for different MTC application scenarios and serve as a fundamental traffic model and overload control method for future ubiquitous net- work.

关 键 词：物联网 泛在网络 机器与机器通信 机器类通信 BETA分布 流量建模 过载控制 

分 类 号：TN929.5[电子电信—通信与信息系统]