Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-03-14
2006-03-14
Deane, Jr., William J. (Department: 2642)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S436000
Reexamination Certificate
active
07013135
ABSTRACT:
Peak detector104detects the first peak timing where the correlation value of the first synchronization channel is the greatest. SSCH identifier108identifies the second synchronization channels by adding the correlation values of the second synchronization channels at a number of timings, and detects the timing where the sum of the correlation values of the identified second synchronization channels is the largest as a second peak timing. Based on the first and second peak timings, timing controller105instructs SSCH identifier108on the timing to perform correlation calculation. Likewise, based on the first and second peak timings, frequency corrector110calculates the error in a frame time measured by a base station, and converts this into a frequency difference, and changes the frequency of an oscillator in RF receiver102in such a way that corrects the frequency difference. By this means second synchronization channels and mid-ambles are accurately identified even when a base station gives a different measurement of a frame time.
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Deane, Jr. William J.
Stevens Davis Miller & Mosher LLP
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