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    • 5. 发明授权
    • Scanning methods and apparatus for system acquisition
    • 系统采集扫描方法及装置
    • US08098630B2
    • 2012-01-17
    • US12118143
    • 2008-05-09
    • Anthony William TodAnton Pavlovich
    • Anthony William TodAnton Pavlovich
    • H04J13/00H04B7/216H04W4/00
    • H04L27/0012
    • In one illustrative example, a system acquisition method suitable for use in W-CDMA utilizes a receiver having an automatic frequency control (AFC) circuit. A system acquisition scan is performed over a plurality of candidate frequencies in an RF band. During the system acquisition scan, a pilot signal of a system on one of the candidate frequencies is detected. When information of the system is successfully decoded, and the system is different from a requested system (e.g. not the RPLMN or HPLMN), the pilot signal of the system is assigned as a timing reference in the receiver for one or more remaining candidate frequencies of the system acquisition scan. Therefore, an AFC window time otherwise needed to converge on a remaining candidate frequency is not needed or reduced.
    • 在一个说明性示例中,适用于W-CDMA的系统获取方法利用具有自动频率控制(AFC)电路的接收机。 在RF频带中的多个候选频率上执行系统采集扫描。 在系统采集扫描期间,检测候选频率之一上的系统的导频信号。 当系统的信息被成功解码并且系统与所请求的系统(例如,不是RPLMN或HPLMN)不同时,系统的导频信号被分配为接收机中的一个或多个剩余候选频率的定时参考 系统采集扫描。 因此,不需要或减少另外需要收敛于剩余候选频率的AFC窗口时间。
    • 6. 发明申请
    • Scanning Methods And Apparatus For System Acquisition
    • 扫描方法和系统采集装置
    • US20090279508A1
    • 2009-11-12
    • US12118143
    • 2008-05-09
    • Anthony William TodAnton Pavlovich
    • Anthony William TodAnton Pavlovich
    • H04J13/00
    • H04L27/0012
    • In one illustrative example, a system acquisition method suitable for use in W-CDMA utilizes a receiver having an automatic frequency control (AFC) circuit. A system acquisition scan is performed over a plurality of candidate frequencies in an RF band. During the system acquisition scan, a pilot signal of a system on one of the candidate frequencies is detected. When information of the system is successfully decoded, and the system is different from a requested system (e.g. not the RPLMN or HPLMN), the pilot signal of the system is assigned as a timing reference in the receiver for one or more remaining candidate frequencies of the system acquisition scan. Therefore, an AFC window time otherwise needed to converge on a remaining candidate frequency is not needed or reduced.
    • 在一个说明性示例中,适用于W-CDMA的系统获取方法利用具有自动频率控制(AFC)电路的接收机。 在RF频带中的多个候选频率上执行系统采集扫描。 在系统采集扫描期间,检测候选频率之一上的系统的导频信号。 当系统的信息被成功解码并且系统与所请求的系统(例如,不是RPLMN或HPLMN)不同时,系统的导频信号被分配为接收机中的一个或多个剩余候选频率的定时参考 系统采集扫描。 因此,不需要或减少另外需要收敛于剩余候选频率的AFC窗口时间。
    • 7. 发明申请
    • Scanning Methods And Apparatus For System Acquisition
    • 扫描方法和系统采集装置
    • US20120082138A1
    • 2012-04-05
    • US13324302
    • 2011-12-13
    • Anthony William TodAnton Pavlovich
    • Anthony William TodAnton Pavlovich
    • H04W4/00
    • H04L27/0012
    • A method for searching for a requested CDMA system using a receiver having an AFC circuit is described. A system acquisition scan is performed over a plurality of candidate frequencies. In the scan, a first pilot signal of a first system is detected on one of the frequencies, and information from the first system is decoded. If the first system is different from the requested system, then the first pilot signal is assigned as a first timing reference in the receiver for remaining frequencies. Subsequently, a second pilot signal of a second system is detected on another one of the frequencies, and information from the second system is decoded. If the second system is different from the requested system, and the first pilot signal fails below a predetermined threshold value, then the second pilot signal is selected as a second timing reference in the receiver for remaining frequencies.
    • 描述了使用具有AFC电路的接收机来搜索所请求的CDMA系统的方法。 在多个候选频率上执行系统采集扫描。 在扫描中,在一个频率上检测第一系统的第一导频信号,并对来自第一系统的信息进行解码。 如果第一系统与所请求的系统不同,则在接收机中将第一导频信号指定为第一定时基准用于剩余频率。 随后,在另一个频率上检测第二系统的第二导频信号,并且来自第二系统的信息被解码。 如果第二系统与所请求的系统不同,并且第一导频信号故障低于预定阈值,则在接收机中选择第二导频信号作为剩余频率的第二定时参考。