计算机应用研究2012，Vol.29Issue(4)：1500-1503,4.DOI:10.3969/j.issn.1001-3695.2012.04.083
TD-SCDMA集群系统中优先级退避算法研究
Research on priority backoff algorithm of TD-SCDMA trunking system
摘要
Abstract
In order to make the priority users be able to set up a call quickly in TD-SCDMA blinking system, this paper proposed a random access technology which was based on priority backoff algorithm. By defining different priority users according to the allocation of the corresponding uplink synchronous code (SYNC_UL) resources and taking priority backoff methods for priority users to make them access fast by class. The simulation results on MATLAB software show that the improved priority exponential backoff algorithm in random access process could perform better for ensuring the successful access rate of high priority users than the priority BEB algorithm. And the successful access rate of medium and low priority users can be obviously increased. What' s more, when the number of access users become large, its average access delay could be declined effective-ly.关键词
TD-SCDMA集群系统/用户优先级/优先级退避/接入成功率/平均接入时延Key words
TD-SCDMA trunking system/ users priority/ priority backoff/ success access rate/ average access delay分类
信息技术与安全科学引用本文复制引用
蒋青,刘彰茂,许泽文,吴香林..TD-SCDMA集群系统中优先级退避算法研究[J].计算机应用研究,2012,29(4):1500-1503,4.基金项目
国家“863”计划资助项目(2009AA011302) （2009AA011302）
国家教育部春晖计划资助项目(Z2007-1-63002) （Z2007-1-63002）
重庆市科委重点实验室专项经费资助项目 （）
