一种TD-SCDMA集群中的动态信道分配算法  

An dynamic channel allocation algorithm in TD-SCDMA trunking communication system

作　　者：唐宏[1] 张艳[1] 

机构地区：[1]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2012年第1期29-33,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家"863"课题"TD-SCDMA集群系统的关键技术研究"(2009AA011302);重庆市科委攻关项目(CSTC;2010AB2003;CSTC;2009AA2307);教育部春晖计划(Z2007-1-63002)~~

摘　　要：在研究了蜂窝系统中的动态信道分配算法和TD-SCDMA集群通信特点的基础上,提出了一种适用于TD-SCDMA集群系统的动态信道分配算法—排队式可移动边界动态信道分配算法(queue movable boundary dynamic channel allocation,QMB_DCA)。该算法基本原理是牺牲部分低优先级业务的接入速度来提高系统整体性能。通过仿真验证分析,该算法相对于可移动边界算法(movable boundary dynamic channel allocation,MB_DCA),在实现了系统较高的资源利用率的同时,减小了低优先级业务的阻塞率和掉话率。On the basis of researches on the dynamic channel allocation algorithms in the cellular communication system and according to the service characteristics of TD-SCDMA trunking communication system,a new dynamic channel allocation algorithm,QMB_DCA,which is applicable for TD-SCDMA trunking communication system is proposed.The fundamental principle is to improve the whole system performance at the expense of reducing the access speed of low priority service partially.Simulation results show that it can ensure the channel utilization efficiency,and reduce the block rate and drop rate of low priority service compared with the MB_DCA algorithm.

关 键 词：TD-SCDMA集群 信道分配 业务优先级 

分 类 号：TN929.52[电子电信—通信与信息系统]