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    Frequency scan for CDMA acquisition
    2.
    发明授权
    Frequency scan for CDMA acquisition 有权
    CDMA采集频率扫描

    公开(公告)号：US07593367B2

    公开(公告)日：2009-09-22

    申请号：US10173209

    申请日：2002-06-14

    申请人： Messay Amerga ,  Vikas Nagpal ,  Wen Jing New ,  Subramanya P. Rao ,  Parvathanathan Subrahmanya ,  Bhupesh Manoharlal Umatt

    发明人： Messay Amerga ,  Vikas Nagpal ,  Wen Jing New ,  Subramanya P. Rao ,  Parvathanathan Subrahmanya ,  Bhupesh Manoharlal Umatt

    IPC分类号： H04Q7/00 ,  H04B7/216

    CPC分类号： H04W48/16 ,  H04B1/707 ,  H04B1/70735 ,  H04B17/27 ,  H04B17/318 ,  H04B17/382 ,  H04L2027/0034 ,  H04W24/00 ,  H04W52/0245 ,  Y02D70/1222 ,  Y02D70/40

    摘要： Techniques for reducing the time required for frequency scan in acquisition are disclosed. In one aspect, received power measurements are made at one or more of the possible carrier frequencies and system search is performed on one or more of those frequencies when the power measurement exceeds a threshold. In another aspect, the power is measured at one or more frequencies in a band of frequencies surrounding a frequency at which the measured power exceeded a threshold. If the measured power at one or more of the frequencies in the band exceeds a second threshold, a system search is performed at one or more of those frequencies. In yet another aspect, frequencies meeting certain criteria are sorted in order of measured power prior to system search or further power measurement, and subsequent processing is performed in order of descending measured power. Various other aspects are also presented. These aspects have the benefit of reducing acquisition time, which results in faster system access and allows for more efficient use of system resources.

    摘要翻译： 公开了减少采集​​中频率扫描所需时间的技术。 在一个方面，在一个或多个可能的载波频率进行接收功率测量，并且当功率测量超过阈值时，对这些频率中的一个或多个进行系统搜索。 在另一方面，在测量功率超过阈值的频率周围的频率带中的一个或多个频率处测量功率。 如果频带中的一个或多个频率处的测量功率超过第二阈值，则在这些频率中的一个或多个频率处执行系统搜索。 在另一方面，满足某些标准的频率在系统搜索或进一步功率测量之前按照测量的功率的顺序进行分类，并且随后的处理按照下降的测量功率的顺序执行。 还提出了各种其他方面。 这些方面具有减少采集时间的优点，这导致更快的系统访问并且允许更有效地使用系统资源。