CAJ | 학술논문

TD-SCDMA移动通信系统在上行同步、智能天线和联合检测等一系列最新技术的基础上，采用了接力切换技术，它是TD-SCDMA移动通信系统关键技术之一。但现有的接力切换算法均依据信号差的绝对值设置判决门限。为了应对移动用户移动速度的不同和无线环境的差异情况下对切换决策的不同要求，提出了一种基于信号差值门限斜率的TD-SCDMA系统内切换判决时延算法。通过系统动态仿真，得出在选择合适的门限斜率值时，该切换算法与现有的算法相比更具有较好的切换率和掉线率性能。
TD-SCDMA이동통신계통재상행동보、지능천선화연합검측등일계렬최신기술적기출상，채용료접력절환기술，타시TD-SCDMA이동통신계통관건기술지일。단현유적접력절환산법균의거신호차적절대치설치판결문한。위료응대이동용호이동속도적불동화무선배경적차이정황하대절환결책적불동요구，제출료일충기우신호차치문한사솔적TD-SCDMA계통내절환판결시연산법。통과계통동태방진，득출재선택합괄적문한사솔치시，해절환산법여현유적산법상비경구유교호적절환솔화도선솔성능。
Based on up-synchronization, smart antennas and joint detectionand other new technologies, ba-ton handover is adapted, as one of the key techniques in TD-SCDMA mobile communication system. How-ever the existing baton handover algorithms usually set the handover decision threshold in accordance with the absolute value of signals deviation. To cope with variousUE mobile speeds and radio environments, a delay-time algorithmbased on slope of signals deviation for handover decision is proposed. Computer simu-lation indicates the good performance of handover ratio and call-drop ratio is proved.