基于TD-SCDMA的一种改进的负荷控制算法  

An Improved Load Control Algorithm Based on TD-SCDMA System

作　　者：李鹏[1] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东青岛266555

出　　处：《西华大学学报（自然科学版）》2012年第5期10-13,18,共5页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金项目(60572020)

摘　　要：负荷控制是第三代移动通信无线资源管理RRM(radio resource management)的一个重要内容,能够为系统内移动用户提供业务质量保证。阐述了TD-SCDMA系统的负荷控制机制,提出了一种改进的"联合"负荷控制算法。该算法基于现有协议标准,让过载判断在基站端执行,过载解决在无线网络控制器RNC(radio networkcontroller)中进行,通过时间窗测量各时隙内过载情况,让服务质量较差的用户主动掉话。通过仿真表明,该算法能够降低系统的误码率,提高整体系统的通信质量。As one of important parts of RRM （radio resource management） in 3G ,load control can provide QOS （quality of serv- ice） assurance for all users. Based on TD - SCDMA uplink , this paper elaborates the principles of load control, and proposes a ＂Joint＂ scheme based on existing standards, in which overload judgement is executed at base station while overload resolution is executed at RNC（ radio network controller）. Time window is employed to measure the load of time slots, the bad users are dropped actively. It is found from the emulation that lower bit error rate is achieved at receiving end by using the algorithm and so the communication quality of system is well improved.

关 键 词：时分同步码分多址 负荷控制 过载 服务质量 

分 类 号：TN914[电子电信—通信与信息系统]