无线网络时变带宽业务的准入控制性能分析  

Performance Evaluation of Admission Control for Calls with Time-Varying Bandwidth Requirement in Wireless Cellular Networks

作　　者：宣孝英[1] 石冰心[1] 邹玲[1] 

机构地区：[1]华中科技大学电信系,湖北武汉430074

出　　处：《小型微型计算机系统》2004年第9期1592-1596,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金 ( 60 172 0 77)资助

摘　　要：无线蜂窝网络的通话准入控制方法与通话的 Qo S以及无线信道的利用率密切相关 .使用 Markov过程得出了业务带宽需求时变状况下系统性能 (通话的切换掉线概率、并发掉线概率、阻塞概率以及信道利用率 )的理论模型 .通过数值结果分析了系统负载、用户的移动。The call admission control schemes have effect on QoS of calls and channel utilization in wireless cellular networks. In this article, we use Markov process to derive the analytical model of system performances (e.g. call's handoff dropping probability, concurrent dropping probability, blocking probability and channel utilization) considering that the bandwidth requirement of a call is time varying. Then, by the results of numerical example, it is analyzed that how the system performances change with system load, the users' mobility and call's holding time.

关 键 词：准入控制 性能分析 无线蜂窝网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]