Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2002-12-05
2009-11-24
Harper, Vincent P (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S437000, C455S439000, C455S450000
Reexamination Certificate
active
07623861
ABSTRACT:
A wireless mobile telephone (400) is operated so as manage the performance of “off-frequency searches,” that is, searches for base station pilot signals that differ in frequency from the pilot signals in the mobile station's active set. Whenever frequency searching is performed (such as responsive to emerging from a reduced-power sleep mode), the mobile station performs on-frequency pilot signal searching (902) upon a prescribed active set frequency. Only if a prescribed off-frequency searching condition (903-908) is satisfied, the mobile station additionally performs off-frequency pilot signal searching (912) upon one or more neighboring base stations' frequencies.
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Ekvetchavit Thunyachate
Joshi Abhay Arvind
Neufeld Arthur James
Yoon Steven
Figueroa Marisol
Harper Vincent P
QUALCOMM Incorporated
Vu Kenneth
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