多业务混合模型下的蜂窝系统性能分析  

Performance Analysis of Cellular System with Hybrid Traffic Model

作　　者：徐超[1] 盛敏[1] 张琰[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,西安710071

出　　处：《北京邮电大学学报》2013年第3期102-107,共6页Journal of Beijing University of Posts and Telecommunications

基　　金：国家重点基础研究发展计划项目(2009CB320404);国家自然科学基金项目(61231008;61172079);教育部创新团队;111项目(B08038);国家重大专项项目(2012ZX03002003);陕西省科学技术研究发展计划项目(2011KJXX-40)

摘　　要：在多业务资源受限蜂窝系统中,提出了一种有效分析系统性能的方法.通过对用户的业务和行为特征进行合理统一的描述,给出了符合混合业务特性的用户业务及行为模型.基于多维连续时间马尔可夫链,得到了系统期望阻塞率、业务中断概率以及系统资源利用率与用户特性之间的关系.仿真结果表明,与已有方法相比,提出的方法能更准确地分析系统性能.A valid approach to analyze the performance of multi-service cellular systems is proposed.Appropriate models of user’s hybrid traffic and its behavior are established with a reasonable description of its characteristics.Accordingly,a multi-dimension continuous time Markov chains based method is used to derive the relationships between the expected system blocking probability,the traffic outage probability as well as the resource utilization ratio and the users’attributes.Simulation results verify that the proposed approach,compared with the existing ones,evaluates system performance more accurately.

关 键 词：蜂窝系统 混合业务 资源受限系统 连续时间马尔可夫链 

分 类 号：TN929.53[电子电信—通信与信息系统]