复合可重构无线移动通信系统分析  

Analysis on Composite Reconfigurable Wireless Mobile Communications System

作　　者：李常茗[1] 李承恕[1] 吴韶波[1] 

机构地区：[1]北京交通大学现代通信研究所,北京100044

出　　处：《铁道学报》2008年第4期44-49,共6页Journal of the China Railway Society

摘　　要：复合可重构无线通信系统是一种向着未来无线通信系统演进的多制式异构无线通信网络解决方案。目前世界范围内的各种研究基本上都是关注两种异构网络的互联互通,关于多制式的异构网络讨论得很少。本文从复合可重构通信系统最基本的结构入手,选取3种具有代表性的接入技术,设定网络环境,将复合可重构通信系统建模成为一个M/H3/m/m排队系统。通过理论分析得到复合通信系统的平均系统信道占用时间、阻塞概率等参数。本文最后部分,通过数值仿真得到复合系统容量和到达率的关系,利用求出的用户容量,将复合可重构无线通信系统与现有的单一无线接入技术构成的系统相比,得出复合可重构通信系统能提供更大的系统容量、能适应更复杂的应用环境的结论。The composite reconfigurable wireless communications system is a multi-standard heterogeneous net- work solution toward evolution to the future wireless mobile network. Now, many worldwide researches con- cern inter-connecting of two heterogeneous networks. And there are few researches on the multi-standards het- erogeneous wireless communications networks. This article starts with the base architecture of the composite reconfigurable communications system. Three representational access techniques are chosen. Application condi- tions are assumed. The composite reconfigurable wireless communications system is modeled as the M/H3/rn/ m queueing system. The block probability of the system and the mean occupation time of the system channel are got by numeric simulation. By contrast with single RAT systems, the composite reconfigurable wireless communications system has larger system capacity and can be applied to more complex application conditions.

关 键 词：4G B3G 复合 异构网络 M/H3/m/m WCDMA IEEE802.11G IEEE802.16E 

分 类 号：TN929.5[电子电信—通信与信息系统]