会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • CELL TIMING ACQUISITION IN A W-CDMA HARD HANDOVER
    • W-CDMA硬切换中的小时钟采集
    • WO2010037055A1
    • 2010-04-01
    • PCT/US2009/058656
    • 2009-09-28
    • QUALCOMM IncorporatedDONG, BrianAMERGA, MessayBHATTACHARJEE, SupratikZHU, Xiaoming
    • DONG, BrianAMERGA, MessayBHATTACHARJEE, SupratikZHU, Xiaoming
    • H04B1/707
    • H04B1/7083H04B1/70735H04B1/70753H04B1/70758H04B2201/70702H04W36/30H04W48/16
    • Cell timing is detected by first trying to detect a target handover cell through detecting a primary synchronization channel (P-SCH) followed by a common pilot channel (CPICH). If that fails, N number of retrials is performed using a full-window search on the CPICH. The full-window CPICH search is performed blindly, without any slot timing information from the P-SCH. Performance is improved while maintaining the benefits of faster acquisition methods in good channel conditions. The full-window search is more time consuming, but takes advantage of the stronger CPICH transmission. In good channel conditions, a mobile device can proceed quickly with the normal method of timing acquisition. With failure, the mobile device can switch to the longer search which has a higher probability of successfully completing the hard handover procedure. The overall effect is a higher success rate of hard handovers without a uniform increase of time spent in cell timing acquisition.
    • 通过首先通过检测跟随公共导频信道(CPICH)的主同步信道(P-SCH)来尝试检测目标切换小区来检测小区定时。 如果失败,则使用CPICH上的全窗口搜索来执行N次重试。 完全窗口CPICH搜索盲目执行,没有来自P-SCH的任何时隙定时信息。 性能得到改善,同时在良好的通道条件下保持更快的采集方法的好处。 全窗口搜索更耗时,但利用更强的CPICH传输。 在良好的信道条件下,移动设备可以通过正常的定时采集方法快速进行。 随着故障,移动设备可以切换到成功完成硬切换过程的较高概率的较长搜索。 总体效果是更高的硬切换成功率,而没有在单元定时采集中花费的时间的均匀增加。